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"cpe:2.3:h:juniper:srx4120:-:*:*:*:*:*:*:*", "matchCriteriaId": "E5942B6E-AFC7-40E4-8007-68C804BD52E3", "vulnerable": false}, {"criteria": "cpe:2.3:h:juniper:srx4200:-:*:*:*:*:*:*:*", "matchCriteriaId": "CCC5F6F5-4347-49D3-909A-27A3A96D36C9", "vulnerable": false}, {"criteria": "cpe:2.3:h:juniper:srx4300:-:*:*:*:*:*:*:*", "matchCriteriaId": "826F893F-7B06-43B5-8653-A8D9794C052E", "vulnerable": false}, {"criteria": "cpe:2.3:h:juniper:srx440:-:*:*:*:*:*:*:*", "matchCriteriaId": "3E15DA7D-AED1-4943-9AEF-565D551311A5", "vulnerable": false}, {"criteria": "cpe:2.3:h:juniper:srx4600:-:*:*:*:*:*:*:*", "matchCriteriaId": "56BA6B86-D3F4-4496-AE46-AC513C6560FA", "vulnerable": false}, {"criteria": "cpe:2.3:h:juniper:srx4700:-:*:*:*:*:*:*:*", "matchCriteriaId": "462CFD52-D3E2-4F7A-98AC-C589D2420556", "vulnerable": false}, {"criteria": "cpe:2.3:h:juniper:srx5400:-:*:*:*:*:*:*:*", "matchCriteriaId": "2FDDC897-747F-44DD-9599-7266F9B5B7B1", "vulnerable": false}, {"criteria": "cpe:2.3:h:juniper:srx5600:-:*:*:*:*:*:*:*", "matchCriteriaId": "68CA098D-CBE4-4E62-9EC0-43E1B6098710", "vulnerable": false}, {"criteria": "cpe:2.3:h:juniper:srx5800:-:*:*:*:*:*:*:*", "matchCriteriaId": "66F474D4-79B6-4525-983C-9A9011BD958B", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An Improper Validation of Specified Quantity in Input vulnerability in the TCP proxy plugin of Juniper Networks Junos OS on MX Series with SPC3, and SRX Series allows an unauthenticated, network-based attacker to cause a complete Denial of Service (DoS).\n\nWhen TCP proxy is engaged in a flow session, to support ALGs,\u00a0Advanced Anti-Malware, ICAP\u00a0or UTM, a TCP packet with specifically malformed TCP header will cause flow processing daemon (flowd) to crash and restart. This causes a complete service outage until the system has automatically recovered.\n\n\n\nThis issue affects Junos OS on MX with SPC3, and SRX Series:\u00a0\n\n\n\n * 23.4 versions before 23.4R2-S7,\u00a0\n * 24.2 versions before 24.2R2-S4,\u00a0\n * 24.4 versions before 24.4R2-S3,\n * 25.2 versions before 25.2R2.\n\n\n\n\nThis issue does not affect releases before 23.4R1."}], "id": "CVE-2026-57023", "lastModified": "2026-07-14T15:19:42.860", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "sirt@juniper.net", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "YES", "Recovery": "AUTOMATIC", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.7, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:A/V:X/RE:M/U:X", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "MODERATE"}, "source": "sirt@juniper.net", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-57023", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-07-10T15:28:39.605123Z", "version": "2.0.3"}}]}, "published": "2026-07-09T22:17:07.397", "references": [{"source": "sirt@juniper.net", "tags": ["Vendor Advisory"], "url": "https://supportportal.juniper.net/JSA110083"}], "sourceIdentifier": "sirt@juniper.net", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-1284"}], "source": "sirt@juniper.net", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": ["srx_series", "mx_series_with_spc3"], "status": "affected", "versions": {"scheme": "generic", "value": "[23.4,23.4R2-S7)"}}, {"platform": ["srx_series", "mx_series_with_spc3"], "status": "affected", "versions": {"scheme": "generic", "value": "[24.2,24.2R2-S4)"}}, {"platform": ["srx_series", "mx_series_with_spc3"], "status": "affected", "versions": {"scheme": "generic", "value": "[24.4,24.4R2-S3)"}}, {"platform": ["srx_series", "mx_series_with_spc3"], "status": "affected", "versions": {"scheme": "generic", "value": "[25.2,25.2R2)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Junos OS", "source": "cna", "vendor": "Juniper Networks"}, "product": "junos_os", "vendor": "juniper_networks"}], "created": "2026-07-09T23:15:06.854006+00:00", "updated": "2026-08-03T04:30:18.195508+00:00", "vendors": ["juniper_networks", "juniper_networks$PRODUCT$junos_os"]}