{"id":"CVE-2026-96222","aliases":[],"title":"Active Directory Federation Services (AD FS) Spoofing Vulnerability","titleSource":"microsoft","descriptionSource":"microsoft","products":[{"vendor":"Microsoft","name":"Microsoft .NET Framework 3.5","platforms":["Windows 11 version 26H1","Windows Server 2012","Windows Server 2012 R2"],"versions":[{"version":"3.5.0","status":"affected","lessThan":"2.0.50727.9188 AND 3.0.30729.9171","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-96222"},{"vendor":"Microsoft","name":"Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2","platforms":["Windows 10 version 1607","Windows Server 2016","Windows Server 2019"],"versions":[{"version":"3.0.0.0","status":"affected","lessThan":"2.0.50727.8987 AND 3.0.30729.8982 AND 4.7.4150.0","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-96222"},{"vendor":"Microsoft","name":"Microsoft .NET Framework 3.5 AND 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Systems"],"versions":[{"version":"10.0.20348.0","status":"affected","lessThan":"10.0.20348.5761","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-96222"},{"vendor":"Microsoft","name":"Windows Server 2025","platforms":["x64-based Systems"],"versions":[{"version":"10.0.26100.0","status":"affected","lessThan":"10.0.26100.33650","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-96222"},{"vendor":"Microsoft","name":"Windows Server 2025 (Server Core installation)","platforms":["x64-based Systems"],"versions":[{"version":"10.0.26100.0","status":"affected","lessThan":"10.0.26100.33650","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-96222"}],"remediation":[],"description":"Improper certificate validation in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network.","severity":"high","score":7.4,"published":"2026-10-13T19:00:31.788Z","modified":"2026-10-28T18:15:38.243Z","withdrawn":false,"knownExploited":false,"affected":[],"references":["https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96222"],"sources":[{"name":"CVE","id":"CVE-2026-96222","modified":"2026-10-28T18:15:38.243Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-96222"}],"assessments":[{"source":"microsoft","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C","score":7.4}],"sourceAffected":[],"kev":{"status":"not-listed","checkedAt":"2026-10-28T20:45:31.448Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[]}