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{"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": "2026-09-11T03:16:23.160", "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": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-841"}], "source": "cve@mitre.org", "type": "Primary"}]}

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