{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-50659", "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "state": "PUBLISHED", "assignerShortName": "microsoft", "dateReserved": "2026-06-05T14:33:50.831Z", "datePublished": "2026-07-14T19:40:15.949Z", "dateUpdated": "2026-08-28T17:54:03.058Z"}, "containers": {"cna": {"title": ".NET Spoofing Vulnerability", "datePublic": "2026-07-14T14:00:00.000Z", "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*", "versionStartIncluding": "17.12.0", "versionEndExcluding": "17.12.22"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "versionStartIncluding": "10.0.0", "versionEndExcluding": "10.0.10"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "versionStartIncluding": "8.0.0", "versionEndExcluding": "8.0.29"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "versionStartIncluding": "9.0.0", "versionEndExcluding": "9.0.18"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*", "versionStartIncluding": "17.14.0", "versionEndExcluding": "17.14.36"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8.0", "versionEndExcluding": "4.8.4803.0"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8.0", "versionEndExcluding": "2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7.0", "versionEndExcluding": "2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7.0", "versionEndExcluding": "4.7.4143.0"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8.1", "versionEndExcluding": "2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.5.0", "versionEndExcluding": "2.0.50727.8983 & 3.0.30729.8978"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:.net_framework:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8.0.0", "versionEndExcluding": "4.8.9340.0"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:visual_studio_2026:*:*:*:*:*:*:*:*", "versionStartIncluding": "18.0", "versionEndExcluding": "18.7.4"}]}]}], "affected": [{"vendor": "Microsoft", "product": ".NET 10.0", "versions": [{"version": "10.0.0", "lessThan": "10.0.10", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": ".NET 8.0", "versions": [{"version": "8.0.0", "lessThan": "8.0.29", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": ".NET 9.0", "versions": [{"version": "9.0.0", "lessThan": "9.0.18", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft .NET Framework 3.5", "platforms": ["Windows 11 Version 26H1 for ARM64-based Systems", "Windows 11 version 26H1 for x64-based Systems", "Windows Server 2012", "Windows Server 2012 (Server Core installation)", "Windows Server 2012 R2", "Windows Server 2012 R2 (Server Core installation)"], "versions": [{"version": "3.5.0", "lessThan": "2.0.50727.8983 & 3.0.30729.8978", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft .NET Framework 3.5 AND 4.7.2", "platforms": ["Windows 10 Version 1607 for 32-bit Systems", "Windows 10 Version 1607 for x64-based Systems", "Windows 10 Version 1809 for 32-bit Systems", "Windows 10 Version 1809 for x64-based Systems", "Windows Server 2016", "Windows Server 2016 (Server Core installation)", "Windows Server 2019", "Windows Server 2019 (Server Core installation)"], "versions": [{"version": "4.7.0", "lessThan": "2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft .NET Framework 3.5 AND 4.8", "platforms": ["Windows 10 Version 1809 for 32-bit Systems", "Windows 10 Version 1809 for x64-based Systems", "Windows 10 Version 21H2 for 32-bit Systems", "Windows 10 Version 21H2 for ARM64-based Systems", "Windows 10 Version 21H2 for x64-based Systems", "Windows 10 Version 22H2 for 32-bit Systems", "Windows 10 Version 22H2 for ARM64-based Systems", "Windows 10 Version 22H2 for x64-based Systems", "Windows Server 2019", "Windows Server 2019 (Server Core installation)", "Windows Server 2022", "Windows Server 2022 (Server Core installation)"], "versions": [{"version": "4.8.0", "lessThan": "2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft .NET Framework 3.5 AND 4.8.1", "platforms": ["Windows 10 Version 21H2 for 32-bit Systems", "Windows 10 Version 21H2 for ARM64-based Systems", "Windows 10 Version 21H2 for x64-based Systems", "Windows 10 Version 22H2 for 32-bit Systems", "Windows 10 Version 22H2 for ARM64-based Systems", "Windows 10 Version 22H2 for x64-based Systems", "Windows 11 Version 23H2 for ARM64-based Systems", "Windows 11 Version 23H2 for x64-based Systems", "Windows 11 Version 24H2 for ARM64-based Systems", "Windows 11 Version 24H2 for x64-based Systems", "Windows 11 Version 25H2 for ARM64-based Systems", "Windows 11 Version 25H2 for x64-based Systems", "Windows Server 2022", "Windows Server 2022 (Server Core installation)"], "versions": [{"version": "4.8.1", "lessThan": "2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2", "platforms": ["Windows Server 2012", "Windows Server 2012 (Server Core installation)", "Windows Server 2012 R2", "Windows Server 2012 R2 (Server Core installation)"], "versions": [{"version": "4.7.0", "lessThan": "4.7.4143.0", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft .NET Framework 4.8", "platforms": ["Windows 10 Version 1607 for 32-bit Systems", "Windows 10 Version 1607 for x64-based Systems", "Windows Server 2012", "Windows Server 2012 (Server Core installation)", "Windows Server 2012 R2", "Windows Server 2012 R2 (Server Core installation)", "Windows Server 2016", "Windows Server 2016 (Server Core installation)"], "versions": [{"version": "4.8.0", "lessThan": "4.8.4803.0", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft .NET Framework 4.8.1", "platforms": ["Windows 11 Version 26H1 for ARM64-based Systems", "Windows 11 version 26H1 for x64-based Systems"], "versions": [{"version": "4.8.0.0", "lessThan": "4.8.9340.0", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft Visual Studio 2022 version 17.12", "versions": [{"version": "17.12.0", "lessThan": "17.12.22", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft Visual Studio 2022 version 17.14", "versions": [{"version": "17.14.0", "lessThan": "17.14.36", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft Visual Studio 2026 version 18.7", "versions": [{"version": "18.0", "lessThan": "18.7.4", "versionType": "custom", "status": "affected"}]}], "descriptions": [{"value": "Improper encoding or escaping of output in .NET allows an authorized attacker to perform spoofing over a network.", "lang": "en-US"}], "problemTypes": [{"descriptions": [{"description": "CWE-116: Improper Encoding or Escaping of Output", "lang": "en-US", "type": "CWE", "cweId": "CWE-116"}]}], "providerMetadata": {"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "shortName": "microsoft", "dateUpdated": "2026-08-28T17:54:03.058Z"}, "references": [{"name": ".NET Spoofing Vulnerability", "tags": ["vendor-advisory", "patch"], "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50659"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en-US", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "baseSeverity": "MEDIUM", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C"}}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-50659", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-14T20:32:29.416499Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-14T20:48:09.399Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-50659", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-14T20:32:29.416499Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-14T20:39:40.283Z"}}], "cna": {"title": ".NET Spoofing Vulnerability", "metrics": [{"format": "CVSS", "cvssV3_1": {"version": "3.1", "baseScore": 6.5, "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C"}, "scenarios": [{"lang": "en-US", "value": "GENERAL"}]}], "affected": [{"vendor": "Microsoft", "product": ".NET 10.0", "versions": [{"status": "affected", "version": "10.0.0", "lessThan": "10.0.10", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": ".NET 8.0", "versions": [{"status": "affected", "version": "8.0.0", "lessThan": "8.0.29", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": ".NET 9.0", "versions": [{"status": "affected", "version": "9.0.0", "lessThan": "9.0.18", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": "Microsoft .NET Framework 3.5", "versions": [{"status": "affected", "version": "3.5.0", "lessThan": "2.0.50727.8983 & 3.0.30729.8978", "versionType": "custom"}], "platforms": ["Windows 11 Version 26H1 for ARM64-based Systems", "Windows 11 version 26H1 for x64-based Systems", "Windows Server 2012", "Windows Server 2012 (Server Core installation)", "Windows Server 2012 R2", "Windows Server 2012 R2 (Server Core installation)"]}, {"vendor": "Microsoft", "product": "Microsoft .NET Framework 3.5 AND 4.7.2", "versions": [{"status": "affected", "version": "4.7.0", "lessThan": "2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0", "versionType": "custom"}], "platforms": ["Windows 10 Version 1607 for 32-bit Systems", "Windows 10 Version 1607 for x64-based Systems", "Windows 10 Version 1809 for 32-bit Systems", "Windows 10 Version 1809 for x64-based Systems", "Windows Server 2016", "Windows Server 2016 (Server Core installation)", "Windows Server 2019", "Windows Server 2019 (Server Core installation)"]}, {"vendor": "Microsoft", "product": "Microsoft .NET Framework 3.5 AND 4.8", "versions": [{"status": "affected", "version": "4.8.0", "lessThan": "2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0", "versionType": "custom"}], "platforms": ["Windows 10 Version 1809 for 32-bit Systems", "Windows 10 Version 1809 for x64-based Systems", "Windows 10 Version 21H2 for 32-bit Systems", "Windows 10 Version 21H2 for ARM64-based Systems", "Windows 10 Version 21H2 for x64-based Systems", "Windows 10 Version 22H2 for 32-bit Systems", "Windows 10 Version 22H2 for ARM64-based Systems", "Windows 10 Version 22H2 for x64-based Systems", "Windows Server 2019", "Windows Server 2019 (Server Core installation)", "Windows Server 2022", "Windows Server 2022 (Server Core installation)"]}, {"vendor": "Microsoft", "product": "Microsoft .NET Framework 3.5 AND 4.8.1", "versions": [{"status": "affected", "version": "4.8.1", "lessThan": "2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0", "versionType": "custom"}], "platforms": ["Windows 10 Version 21H2 for 32-bit Systems", "Windows 10 Version 21H2 for ARM64-based Systems", "Windows 10 Version 21H2 for x64-based Systems", "Windows 10 Version 22H2 for 32-bit Systems", "Windows 10 Version 22H2 for ARM64-based Systems", "Windows 10 Version 22H2 for x64-based Systems", "Windows 11 Version 23H2 for ARM64-based Systems", "Windows 11 Version 23H2 for x64-based Systems", "Windows 11 Version 24H2 for ARM64-based Systems", "Windows 11 Version 24H2 for x64-based Systems", "Windows 11 Version 25H2 for ARM64-based Systems", "Windows 11 Version 25H2 for x64-based Systems", "Windows Server 2022", "Windows Server 2022 (Server Core installation)"]}, {"vendor": "Microsoft", "product": "Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2", "versions": [{"status": "affected", "version": "4.7.0", "lessThan": "4.7.4143.0", "versionType": "custom"}], "platforms": ["Windows Server 2012", "Windows Server 2012 (Server Core installation)", "Windows Server 2012 R2", "Windows Server 2012 R2 (Server Core installation)"]}, {"vendor": "Microsoft", "product": "Microsoft .NET Framework 4.8", "versions": [{"status": "affected", "version": "4.8.0", "lessThan": "4.8.4803.0", "versionType": "custom"}], "platforms": ["Windows 10 Version 1607 for 32-bit Systems", "Windows 10 Version 1607 for x64-based Systems", "Windows Server 2012", "Windows Server 2012 (Server Core installation)", "Windows Server 2012 R2", "Windows Server 2012 R2 (Server Core installation)", "Windows Server 2016", "Windows Server 2016 (Server Core installation)"]}, {"vendor": "Microsoft", "product": "Microsoft .NET Framework 4.8.1", "versions": [{"status": "affected", "version": "4.8.0.0", "lessThan": "4.8.9340.0", "versionType": "custom"}], "platforms": ["Windows 11 Version 26H1 for ARM64-based Systems", "Windows 11 version 26H1 for x64-based Systems"]}, {"vendor": "Microsoft", "product": "Microsoft Visual Studio 2022 version 17.12", "versions": [{"status": "affected", "version": "17.12.0", "lessThan": "17.12.22", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": "Microsoft Visual Studio 2022 version 17.14", "versions": [{"status": "affected", "version": "17.14.0", "lessThan": "17.14.36", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": "Microsoft Visual Studio 2026 version 18.7", "versions": [{"status": "affected", "version": "18.0", "lessThan": "18.7.4", "versionType": "custom"}]}], "datePublic": "2026-07-14T14:00:00.000Z", "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50659", "name": ".NET Spoofing Vulnerability", "tags": ["vendor-advisory", "patch"]}], "descriptions": [{"lang": "en-US", "value": "Improper encoding or escaping of output in .NET allows an authorized attacker to perform spoofing over a network."}], "problemTypes": [{"descriptions": [{"lang": "en-US", "type": "CWE", "cweId": "CWE-116", "description": "CWE-116: Improper Encoding or Escaping of Output"}]}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "17.12.22", "versionStartIncluding": "17.12.0"}, {"criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "10.0.10", "versionStartIncluding": "10.0.0"}, {"criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "8.0.29", "versionStartIncluding": "8.0.0"}, {"criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "9.0.18", "versionStartIncluding": "9.0.0"}, {"criteria": "cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "17.14.36", "versionStartIncluding": "17.14.0"}, {"criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.8.4803.0", "versionStartIncluding": "4.8.0"}, {"criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0", "versionStartIncluding": "4.8.0"}, {"criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0", "versionStartIncluding": "4.7.0"}, {"criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.7.4143.0", "versionStartIncluding": "4.7.0"}, {"criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0", "versionStartIncluding": "4.8.1"}, {"criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "2.0.50727.8983 & 3.0.30729.8978", "versionStartIncluding": "3.5.0"}, {"criteria": "cpe:2.3:a:microsoft:.net_framework:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.8.9340.0", "versionStartIncluding": "4.8.0.0"}, {"criteria": "cpe:2.3:a:microsoft:visual_studio_2026:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "18.7.4", "versionStartIncluding": "18.0"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "shortName": "microsoft", "dateUpdated": "2026-08-28T17:54:03.058Z"}}}, "cveMetadata": {"cveId": "CVE-2026-50659", "state": "PUBLISHED", "dateUpdated": "2026-08-28T17:54:03.058Z", "dateReserved": "2026-06-05T14:33:50.831Z", "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "datePublished": "2026-07-14T19:40:15.949Z", "assignerShortName": "microsoft"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": ".NET 10.0", "vendor": "Microsoft", "versions": [{"lessThan": "10.0.10", "status": "affected", "version": "10.0.0", "versionType": "custom"}]}, {"product": ".NET 8.0", "vendor": "Microsoft", "versions": [{"lessThan": "8.0.29", "status": "affected", "version": "8.0.0", "versionType": "custom"}]}, {"product": ".NET 9.0", "vendor": "Microsoft", "versions": [{"lessThan": "9.0.18", "status": "affected", "version": "9.0.0", "versionType": "custom"}]}, {"platforms": ["Windows 11 Version 26H1 for ARM64-based Systems", "Windows 11 version 26H1 for x64-based Systems", "Windows Server 2012", "Windows Server 2012 (Server Core installation)", "Windows Server 2012 R2", "Windows Server 2012 R2 (Server Core installation)"], "product": "Microsoft .NET Framework 3.5", "vendor": "Microsoft", "versions": [{"lessThan": "2.0.50727.8983 & 3.0.30729.8978", "status": "affected", "version": "3.5.0", "versionType": "custom"}]}, {"platforms": ["Windows 10 Version 1607 for 32-bit Systems", "Windows 10 Version 1607 for x64-based Systems", "Windows 10 Version 1809 for 32-bit Systems", "Windows 10 Version 1809 for x64-based Systems", "Windows Server 2016", "Windows Server 2016 (Server Core installation)", "Windows Server 2019", "Windows Server 2019 (Server Core installation)"], "product": "Microsoft .NET Framework 3.5 AND 4.7.2", "vendor": "Microsoft", "versions": [{"lessThan": "2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0", "status": "affected", "version": "4.7.0", "versionType": "custom"}]}, {"platforms": ["Windows 10 Version 1809 for 32-bit Systems", "Windows 10 Version 1809 for x64-based Systems", "Windows 10 Version 21H2 for 32-bit Systems", "Windows 10 Version 21H2 for ARM64-based Systems", "Windows 10 Version 21H2 for x64-based Systems", "Windows 10 Version 22H2 for 32-bit Systems", "Windows 10 Version 22H2 for ARM64-based Systems", "Windows 10 Version 22H2 for x64-based Systems", "Windows Server 2019", "Windows Server 2019 (Server Core installation)", "Windows Server 2022", "Windows Server 2022 (Server Core installation)"], "product": "Microsoft .NET Framework 3.5 AND 4.8", "vendor": "Microsoft", "versions": [{"lessThan": "2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0", "status": "affected", "version": "4.8.0", "versionType": "custom"}]}, {"platforms": ["Windows 10 Version 21H2 for 32-bit Systems", "Windows 10 Version 21H2 for ARM64-based Systems", "Windows 10 Version 21H2 for x64-based Systems", "Windows 10 Version 22H2 for 32-bit Systems", "Windows 10 Version 22H2 for ARM64-based Systems", "Windows 10 Version 22H2 for x64-based Systems", "Windows 11 Version 23H2 for ARM64-based Systems", "Windows 11 Version 23H2 for x64-based Systems", "Windows 11 Version 24H2 for ARM64-based Systems", "Windows 11 Version 24H2 for x64-based Systems", "Windows 11 Version 25H2 for ARM64-based Systems", "Windows 11 Version 25H2 for x64-based Systems", "Windows Server 2022", "Windows Server 2022 (Server Core installation)"], "product": "Microsoft .NET Framework 3.5 AND 4.8.1", "vendor": "Microsoft", "versions": [{"lessThan": "2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0", "status": "affected", "version": "4.8.1", "versionType": "custom"}]}, {"platforms": ["Windows Server 2012", "Windows Server 2012 (Server Core installation)", "Windows Server 2012 R2", "Windows Server 2012 R2 (Server Core installation)"], "product": "Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2", "vendor": "Microsoft", "versions": [{"lessThan": "4.7.4143.0", "status": "affected", "version": "4.7.0", "versionType": "custom"}]}, {"platforms": ["Windows 10 Version 1607 for 32-bit Systems", "Windows 10 Version 1607 for x64-based Systems", "Windows Server 2012", "Windows Server 2012 (Server Core installation)", "Windows Server 2012 R2", "Windows Server 2012 R2 (Server Core installation)", "Windows Server 2016", "Windows Server 2016 (Server Core installation)"], "product": "Microsoft .NET Framework 4.8", "vendor": "Microsoft", "versions": [{"lessThan": "4.8.4803.0", "status": "affected", "version": "4.8.0", "versionType": "custom"}]}, {"platforms": ["Windows 11 Version 26H1 for ARM64-based Systems", "Windows 11 version 26H1 for x64-based Systems"], "product": "Microsoft .NET Framework 4.8.1", "vendor": "Microsoft", "versions": [{"lessThan": "4.8.9340.0", "status": "affected", "version": "4.8.0.0", "versionType": "custom"}]}, {"product": "Microsoft Visual Studio 2022 version 17.12", "vendor": "Microsoft", "versions": [{"lessThan": "17.12.22", "status": "affected", "version": "17.12.0", "versionType": "custom"}]}, {"product": "Microsoft Visual Studio 2022 version 17.14", "vendor": "Microsoft", "versions": [{"lessThan": "17.14.36", "status": "affected", "version": "17.14.0", "versionType": "custom"}]}, {"product": "Microsoft Visual Studio 2026 version 18.7", "vendor": "Microsoft", "versions": [{"lessThan": "18.7.4", "status": "affected", "version": "18.0", "versionType": "custom"}]}], "source": "secure@microsoft.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:.net_framework:4.8.1:*:*:*:*:*:*:*", "matchCriteriaId": "934D4E46-12C1-41DC-A28C-A2C430E965E4", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:o:microsoft:windows_11_26h1:-:*:*:*:*:*:arm64:*", "matchCriteriaId": "CBFE0371-0C4D-406A-9EC7-456104271C3E", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_11_26h1:-:*:*:*:*:*:x64:*", "matchCriteriaId": "F2B83840-FCE8-445A-AE55-ACEDA6534FA1", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:.net_framework:4.8:*:*:*:*:*:*:*", "matchCriteriaId": "2D3F18AF-84ED-473B-A8DF-65EB23C475AF", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:o:microsoft:windows_10_1607:-:*:*:*:*:*:x64:*", "matchCriteriaId": "5E491E46-1917-41FE-8F9A-BB0BDDEB42C3", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_10_1607:-:*:*:*:*:*:x86:*", "matchCriteriaId": "0A1BC97A-263E-4291-8AEF-02EE4E6031E9", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*", "matchCriteriaId": "A7DF96F8-BA6A-4780-9CA3-F719B3F81074", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*", "matchCriteriaId": "DB18C4CE-5917-401E-ACF7-2747084FD36E", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*", "matchCriteriaId": "041FF8BA-0B12-4A1F-B4BF-9C4F33B7C1E7", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:.net_framework:4.6.2:*:*:*:*:*:*:*", "matchCriteriaId": "A16AD2B0-2189-4E8E-B7FC-CE598CA1CB2D", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:.net_framework:4.7:*:*:*:*:*:*:*", "matchCriteriaId": "734112B3-1383-4BE3-8721-C0F84566B764", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:.net_framework:4.7.1:*:*:*:*:*:*:*", "matchCriteriaId": "36B0E40A-84EF-4099-A395-75D6B8CDA196", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*", "matchCriteriaId": "3EF7A75E-EE27-4AA7-8D84-9D696728A4CE", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*", "matchCriteriaId": "A7DF96F8-BA6A-4780-9CA3-F719B3F81074", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*", "matchCriteriaId": "DB18C4CE-5917-401E-ACF7-2747084FD36E", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "matchCriteriaId": "1144FF26-EDCE-4609-A3E8-56DD190B0953", "versionEndExcluding": "8.0.29", "versionStartIncluding": "8.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "matchCriteriaId": "140E7E20-8E57-462D-B4B5-8A26B4A23925", "versionEndExcluding": "9.0.18", "versionStartIncluding": "9.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*", "matchCriteriaId": "387021A0-AF36-463C-A605-32EA7DAC172E", "vulnerable": false}, {"criteria": "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*", "matchCriteriaId": "703AF700-7A70-47E2-BC3A-7FD03B3CA9C1", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*", "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "matchCriteriaId": "CD89D801-933E-4D78-9187-D2CA94370FA0", "versionEndExcluding": "10.0.6", "versionStartIncluding": "10.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*", "matchCriteriaId": "387021A0-AF36-463C-A605-32EA7DAC172E", "vulnerable": false}, {"criteria": "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*", "matchCriteriaId": "703AF700-7A70-47E2-BC3A-7FD03B3CA9C1", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:.net_framework:3.5:-:*:*:*:*:*:*", "matchCriteriaId": "23317443-1968-4791-9F20-AD3B308A83D1", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:.net_framework:4.8.1:*:*:*:*:*:*:*", "matchCriteriaId": "934D4E46-12C1-41DC-A28C-A2C430E965E4", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:o:microsoft:windows_10_21h2:-:*:*:*:*:*:arm64:*", "matchCriteriaId": "8FC46499-DB6E-48BF-9334-85EE27AFE7AF", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_10_21h2:-:*:*:*:*:*:x64:*", "matchCriteriaId": "83A79DD6-E74E-419F-93F1-323B68502633", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_10_21h2:-:*:*:*:*:*:x86:*", "matchCriteriaId": "61959ACC-B608-4556-92AF-4D94B338907A", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_10_22h2:-:*:*:*:*:*:arm64:*", "matchCriteriaId": "A9D54EE6-30AF-411C-A285-A4DCB6C6EC06", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_10_22h2:-:*:*:*:*:*:x64:*", "matchCriteriaId": "C230D3BF-7FCE-405C-B62E-B9190C995C3C", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_10_22h2:-:*:*:*:*:*:x86:*", "matchCriteriaId": "1FD62DCB-66D1-4CEA-828E-0BD302AC63CA", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_11_23h2:-:*:*:*:*:*:arm64:*", "matchCriteriaId": "B0301BA0-81DB-4FC1-9BC3-EB48A56BC608", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_11_23h2:-:*:*:*:*:*:x64:*", "matchCriteriaId": "8E3C1327-F331-4448-A253-00EAC7428317", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_11_24h2:-:*:*:*:*:*:arm64:*", "matchCriteriaId": "08EE1F3A-A8DE-4867-BB5B-8A8ED867F3CA", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_11_24h2:-:*:*:*:*:*:x64:*", "matchCriteriaId": "B1670829-6A8C-4688-B7A5-3DFB878A4861", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_11_25h2:-:*:*:*:*:*:arm64:*", "matchCriteriaId": "024EE6EC-6D62-4EAC-B1EF-A5E4EAD439A1", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_11_25h2:-:*:*:*:*:*:x64:*", "matchCriteriaId": "25D142AB-B61D-43F3-B7E6-DB9140EFEF75", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2022:-:*:*:*:*:*:*:*", "matchCriteriaId": "821614DD-37DD-44E2-A8A4-FE8D23A33C3C", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:.net_framework:3.5:-:*:*:*:*:*:*", "matchCriteriaId": "23317443-1968-4791-9F20-AD3B308A83D1", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:.net_framework:4.8:*:*:*:*:*:*:*", "matchCriteriaId": "2D3F18AF-84ED-473B-A8DF-65EB23C475AF", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:x64:*", "matchCriteriaId": "306B7CE6-8239-4AED-9ED4-4C9F5B349F58", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:x86:*", "matchCriteriaId": "345FCD64-D37B-425B-B64C-8B1640B7E850", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_10_21h2:-:*:*:*:*:*:arm64:*", "matchCriteriaId": "8FC46499-DB6E-48BF-9334-85EE27AFE7AF", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_10_21h2:-:*:*:*:*:*:x64:*", "matchCriteriaId": "83A79DD6-E74E-419F-93F1-323B68502633", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_10_21h2:-:*:*:*:*:*:x86:*", "matchCriteriaId": "61959ACC-B608-4556-92AF-4D94B338907A", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_10_22h2:-:*:*:*:*:*:arm64:*", "matchCriteriaId": "A9D54EE6-30AF-411C-A285-A4DCB6C6EC06", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_10_22h2:-:*:*:*:*:*:x64:*", "matchCriteriaId": "C230D3BF-7FCE-405C-B62E-B9190C995C3C", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_10_22h2:-:*:*:*:*:*:x86:*", "matchCriteriaId": "1FD62DCB-66D1-4CEA-828E-0BD302AC63CA", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*", "matchCriteriaId": "DB79EE26-FC32-417D-A49C-A1A63165A968", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2022:-:*:*:*:*:*:*:*", "matchCriteriaId": "821614DD-37DD-44E2-A8A4-FE8D23A33C3C", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:.net_framework:3.5:-:*:*:*:*:*:*", "matchCriteriaId": "23317443-1968-4791-9F20-AD3B308A83D1", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*", "matchCriteriaId": "3EF7A75E-EE27-4AA7-8D84-9D696728A4CE", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:o:microsoft:windows_10_1607:-:*:*:*:*:*:x64:*", "matchCriteriaId": "5E491E46-1917-41FE-8F9A-BB0BDDEB42C3", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_10_1607:-:*:*:*:*:*:x86:*", "matchCriteriaId": "0A1BC97A-263E-4291-8AEF-02EE4E6031E9", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:x64:*", "matchCriteriaId": "306B7CE6-8239-4AED-9ED4-4C9F5B349F58", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:x86:*", "matchCriteriaId": "345FCD64-D37B-425B-B64C-8B1640B7E850", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*", "matchCriteriaId": "041FF8BA-0B12-4A1F-B4BF-9C4F33B7C1E7", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*", "matchCriteriaId": "DB79EE26-FC32-417D-A49C-A1A63165A968", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:.net_framework:3.5:-:*:*:*:*:*:*", "matchCriteriaId": "23317443-1968-4791-9F20-AD3B308A83D1", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:*", "matchCriteriaId": "6A2310E5-5BEE-40B4-994B-386E22C986A4", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:*", "matchCriteriaId": "DA9F6F61-46D3-4ECD-8B5D-1484222B7364", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*", "matchCriteriaId": "A7DF96F8-BA6A-4780-9CA3-F719B3F81074", "vulnerable": false}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*", "matchCriteriaId": "DB18C4CE-5917-401E-ACF7-2747084FD36E", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*", "matchCriteriaId": "198B86D0-5A5A-49AF-8095-FB2E481E9440", "versionEndExcluding": "17.12.22", "versionStartIncluding": "17.12.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*", "matchCriteriaId": "03F88475-3382-48DF-B2C7-7DCDA8A0EBE7", "versionEndExcluding": "17.14.36", "versionStartIncluding": "17.14.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:visual_studio_2026:*:*:*:*:*:*:*:*", "matchCriteriaId": "B3FFA460-81F9-43AF-BA00-49AA2D4F0C51", "versionEndExcluding": "18.7.4", "versionStartIncluding": "18.7.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper encoding or escaping of output in .NET allows an authorized attacker to perform spoofing over a network."}], "id": "CVE-2026-50659", "lastModified": "2026-07-24T13:39:30.693", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "secure@microsoft.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-50659", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-07-14T20:32:29.416499Z", "version": "2.0.3"}}]}, "published": "2026-07-14T20:17:38.917", "references": [{"source": "secure@microsoft.com", "tags": ["Patch", "Vendor Advisory"], "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50659"}], "sourceIdentifier": "secure@microsoft.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-116"}], "source": "secure@microsoft.com", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2026:41893", "cpe": "cpe:/o:redhat:enterprise_linux:10.2", "package": "dotnet8.0-0:8.0.129-1.el10_2", "product_name": "Red Hat Enterprise Linux 10", "release_date": "2026-07-20T00:00:00Z"}, {"advisory": "RHSA-2026:41895", "cpe": "cpe:/o:redhat:enterprise_linux:10.2", "package": "dotnet9.0-0:9.0.119-1.el10_2", "product_name": "Red Hat Enterprise Linux 10", "release_date": "2026-07-20T00:00:00Z"}, {"advisory": "RHSA-2026:41897", "cpe": "cpe:/o:redhat:enterprise_linux:10.2", "package": "dotnet10.0-0:10.0.110-1.el10_2", "product_name": "Red Hat Enterprise Linux 10", "release_date": "2026-07-20T00:00:00Z"}, {"advisory": "RHSA-2026:41899", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "dotnet9.0-0:9.0.119-1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2026-07-20T00:00:00Z"}, {"advisory": "RHSA-2026:41900", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "dotnet10.0-0:10.0.110-1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2026-07-20T00:00:00Z"}, {"advisory": "RHSA-2026:41901", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "dotnet8.0-0:8.0.129-1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2026-07-20T00:00:00Z"}, {"advisory": "RHSA-2026:41894", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "dotnet8.0-0:8.0.129-1.el9_8", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2026-07-20T00:00:00Z"}, {"advisory": "RHSA-2026:41896", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "dotnet9.0-0:9.0.119-1.el9_8", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2026-07-20T00:00:00Z"}, {"advisory": "RHSA-2026:41898", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "dotnet10.0-0:10.0.110-1.el9_8", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2026-07-20T00:00:00Z"}, {"advisory": "RHSA-2026:26638", "cpe": "cpe:/a:redhat:hummingbird:1", "package": "dotnet10-0-main-10.0.109-1.hum1", "product_name": "Red Hat Hardened Images", "release_date": "2026-06-17T00:00:00Z"}, {"advisory": "RHSA-2026:39952", "cpe": "cpe:/a:redhat:hummingbird:1", "package": "dotnet9-0-main-9.0.119-1.hum1", "product_name": "Red Hat Hardened Images", "release_date": "2026-07-15T00:00:00Z"}, {"advisory": "RHSA-2026:42145", "cpe": "cpe:/a:redhat:hummingbird:1", "package": "dotnet8-0-main-8.0.129-2.1.hum1", "product_name": "Red Hat Hardened Images", "release_date": "2026-07-20T00:00:00Z"}], "bugzilla": {"description": ".NET: .NET: Network Spoofing Vulnerability", "id": "2500589", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2500589"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N", "status": "verified"}, "cwe": "CWE-838", "details": ["Improper encoding or escaping of output in .NET allows an authorized attacker to perform spoofing over a network.", "A flaw was found in .NET. An authorized attacker can exploit this vulnerability by leveraging improper encoding or escaping of output. This allows the attacker to perform spoofing over a network, potentially deceiving users or systems into believing they are interacting with a trusted entity."], "name": "CVE-2026-50659", "package_state": [{"cpe": "cpe:/a:redhat:openshift_devspaces:3", "fix_state": "Affected", "package_name": "devspaces/udi-rhel9", "product_name": "Red Hat OpenShift Dev Spaces"}], "public_date": "2026-07-14T19:40:15Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-50659\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-50659\nhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50659"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[10.0.0,10.0.6)"}}], "enrichment": {"confidence": 85.0, "confidence_source": "matching", "scores": [{"score": 85.0, "source": "matching"}]}, "original": {"product": ".NET 10.0", "source": "cna", "vendor": "Microsoft"}, "product": ".net", "vendor": "microsoft"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[8.0.0,8.0.29)"}}], "enrichment": {"confidence": 88.0, "confidence_source": "matching", "scores": [{"score": 88.0, "source": "matching"}]}, "original": {"product": ".NET 8.0", "source": "cna", "vendor": "Microsoft"}, "product": ".net", "vendor": "microsoft"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[9.0.0,9.0.18)"}}], "enrichment": {"confidence": 88.0, "confidence_source": "matching", "scores": [{"score": 88.0, "source": "matching"}]}, "original": {"product": ".NET 9.0", "source": "cna", "vendor": "Microsoft"}, "product": ".net", "vendor": "microsoft"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[17.12.0,17.12.22)"}}], "enrichment": {"confidence": 84.0, "confidence_source": "matching", "scores": [{"score": 84.0, "source": "matching"}]}, "original": {"product": "Microsoft Visual Studio 2022 version 17.12", "source": "cna", "vendor": "Microsoft"}, "product": "microsoft_visual_studio_2022", "vendor": "microsoft"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[17.14.0,17.14.36)"}}], "enrichment": {"confidence": 84.0, "confidence_source": "matching", "scores": [{"score": 84.0, "source": "matching"}]}, "original": {"product": "Microsoft Visual Studio 2022 version 17.14", "source": "cna", "vendor": "Microsoft"}, "product": "microsoft_visual_studio_2022", "vendor": "microsoft"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[18.0,18.7.4)"}}], "enrichment": {"confidence": 83.0, "confidence_source": "matching", "scores": [{"score": 83.0, "source": "matching"}]}, "original": {"product": "Microsoft Visual Studio 2026 version 18.7", "source": "cna", "vendor": "Microsoft"}, "product": "microsoft_visual_studio_2022", "vendor": "microsoft"}, {"configurations": [{"platform": null, "status": "affected", "versions": null}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "product": "visual_studio_2022", "vendor": "microsoft"}, {"configurations": [{"platform": null, "status": "affected", "versions": null}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "product": "visual_studio_2026", "vendor": "microsoft"}], "created": "2026-07-16T02:30:16.864258+00:00", "updated": "2026-08-05T10:00:03.434242+00:00", "vendors": ["microsoft", "microsoft$PRODUCT$.net", "microsoft$PRODUCT$microsoft_visual_studio_2022", "microsoft$PRODUCT$visual_studio_2022", "microsoft$PRODUCT$visual_studio_2026"]}