{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-81576", "assignerOrgId": "2fc02b1f-71e7-4514-a878-169626f68903", "state": "PUBLISHED", "assignerShortName": "wibu", "dateReserved": "2026-08-27T07:01:24.780Z", "datePublished": "2026-08-27T07:14:11.299Z", "dateUpdated": "2026-08-27T08:00:26.426Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://www.wibu.com/products/codemeter/runtime.html", "defaultStatus": "unaffected", "product": "codemeter-runtime", "vendor": "wibu-systems-ag", "versions": [{"lessThan": "9.10", "status": "affected", "version": "9.00", "versionType": "custom"}, {"lessThan": "8.41a", "status": "affected", "version": "8.00", "versionType": "custom"}, {"status": "affected", "version": "7.00"}, {"status": "affected", "version": "6.00"}]}], "cpeApplicability": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:wibu-systems-ag:codemeter-runtime:*:*:*:*:*:*:*:*", "versionEndExcluding": "9.10", "versionStartIncluding": "9.00", "vulnerable": true}, {"criteria": "cpe:2.3:a:wibu-systems-ag:codemeter-runtime:*:*:*:*:*:*:*:*", "versionEndExcluding": "8.41a", "versionStartIncluding": "8.00", "vulnerable": true}, {"criteria": "cpe:2.3:a:wibu-systems-ag:codemeter-runtime:7.00:*:*:*:*:*:*:*", "vulnerable": true}, {"criteria": "cpe:2.3:a:wibu-systems-ag:codemeter-runtime:6.00:*:*:*:*:*:*:*", "vulnerable": true}], "negate": false, "operator": "OR"}], "operator": "OR"}], "credits": [{"lang": "en", "type": "reporter", "value": "Andrew Teylu of Vector Informatik GmbH"}], "datePublic": "2026-08-25T13:00:00.000Z", "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "If configured as a server, CodeMeter Runtime before versions 8.41a and 9.10 issues handles per connection and relies on a cryptographically weak<br>SID as sole authenticator. An attacker can brute-force the SID, recover another session's handle number, and read<br>license information belonging to another handle."}], "value": "If configured as a server, CodeMeter Runtime before versions 8.41a and 9.10 issues handles per connection and relies on a cryptographically weak\nSID as sole authenticator. An attacker can brute-force the SID, recover another session's handle number, and read\nlicense information belonging to another handle."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.7, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N", "version": "3.1"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-639", "description": "CWE-639 Authorization bypass through User-Controlled key", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "2fc02b1f-71e7-4514-a878-169626f68903", "shortName": "wibu", "dateUpdated": "2026-08-27T08:00:26.426Z"}, "references": [{"tags": ["vendor-advisory"], "url": "https://cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/AdvisoryWIBU-103401.pdf"}], "source": {"discovery": "EXTERNAL"}, "title": "Improper Authentication of Session Handles", "x_generator": {"engine": "Vulnogram 1.0.0-beta"}}}}

{}

{"affected": [{"affectedData": [{"collectionURL": "https://www.wibu.com/products/codemeter/runtime.html", "defaultStatus": "unaffected", "product": "codemeter-runtime", "vendor": "wibu-systems-ag", "versions": [{"lessThan": "9.10", "status": "affected", "version": "9.00", "versionType": "custom"}, {"lessThan": "8.41a", "status": "affected", "version": "8.00", "versionType": "custom"}, {"status": "affected", "version": "7.00"}, {"status": "affected", "version": "6.00"}]}], "source": "2fc02b1f-71e7-4514-a878-169626f68903"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "If configured as a server, CodeMeter Runtime before versions 8.41a and 9.10 issues handles per connection and relies on a cryptographically weak\nSID as sole authenticator. An attacker can brute-force the SID, recover another session's handle number, and read\nlicense information belonging to another handle."}], "id": "CVE-2026-81576", "lastModified": "2026-08-27T10:16:40.313", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.7, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.1, "impactScore": 4.0, "source": "2fc02b1f-71e7-4514-a878-169626f68903", "type": "Secondary"}]}, "published": "2026-08-27T10:16:40.313", "references": [{"source": "2fc02b1f-71e7-4514-a878-169626f68903", "url": "https://cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/AdvisoryWIBU-103401.pdf"}], "sourceIdentifier": "2fc02b1f-71e7-4514-a878-169626f68903", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-639"}], "source": "2fc02b1f-71e7-4514-a878-169626f68903", "type": "Secondary"}]}

{}

{"created": "2026-08-27T10:45:17.063109+00:00", "updated": "2026-08-27T10:45:17.063114+00:00", "vendors": []}