{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-78135", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "state": "PUBLISHED", "assignerShortName": "mitre", "dateReserved": "2026-08-22T23:41:22.635Z", "datePublished": "2026-09-11T02:07:28.763Z", "dateUpdated": "2026-09-11T02:07:28.763Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "strongSwan", "vendor": "strongSwan", "versions": [{"lessThan": "6.1.0", "status": "affected", "version": "5.9.7", "versionType": "semver"}]}], "descriptions": [{"lang": "en", "value": "libcharon in strongSwan 5.9.7 through 6.0.7 mishandles behavioral workflow in the IKEv2 state machine. Because\u00a0CREATE_CHILD_SA requests are mishandled, there can be an authentication bypass."}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.6, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L", "version": "3.1"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-841", "description": "CWE-841 Improper Enforcement of Behavioral Workflow", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2026-09-11T02:07:28.763Z"}, "references": [{"url": "https://github.com/strongswan/strongswan/releases/tag/6.1.0"}, {"url": "https://www.strongswan.org/blog/2026/09/07/strongswan-vulnerability-(cve-2026-78135).html"}], "x_generator": {"engine": "CVE-Request-form 0.0.1"}, "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:strongswan:strongswan:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9.7", "versionEndExcluding": "6.1.0"}]}]}]}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "strongSwan", "vendor": "strongSwan", "versions": [{"lessThan": "6.1.0", "status": "affected", "version": "5.9.7", "versionType": "semver"}]}], "source": "cve@mitre.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "libcharon in strongSwan 5.9.7 through 6.0.7 mishandles behavioral workflow in the IKEv2 state machine. Because\u00a0CREATE_CHILD_SA requests are mishandled, there can be an authentication bypass."}], "id": "CVE-2026-78135", "lastModified": "2026-09-11T14:56:16.913", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.6, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 3.4, "source": "cve@mitre.org", "type": "Secondary"}]}, "published": "2026-09-11T03:16:23.160", "references": [{"source": "cve@mitre.org", "url": "https://github.com/strongswan/strongswan/releases/tag/6.1.0"}, {"source": "cve@mitre.org", "url": "https://www.strongswan.org/blog/2026/09/07/strongswan-vulnerability-(cve-2026-78135).html"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-841"}], "source": "cve@mitre.org", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.9.7,6.1.0)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "strongSwan", "source": "cna", "vendor": "strongSwan"}, "product": "strongswan", "vendor": "strongswan"}], "created": "2026-09-11T06:00:10.278174+00:00", "title": "Authentication Bypass via CREATE_CHILD_SA in strongSwan IKEv2", "updated": "2026-09-11T10:00:08.430101+00:00", "vendors": ["strongswan", "strongswan$PRODUCT$strongswan"]}