CVE-2026-96222Published
Active Directory Federation Services (AD FS) Spoofing Vulnerability
Explicit identifiers and source references
These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.
CVE-2026-96222 · Microsoft / collected KEV context
cve-program · CVE-2026-96222
euvd · EUVD-2026-99750
nvd · CVE-2026-96222
osv · GHSA-vrv5-2jg9-4mmr
- https://github.com/dotnet/runtime/security/advisories/GHSA-vrv5-2jg9-4mmr
- https://nvd.nist.gov/vuln/detail/CVE-2026-96222
- https://github.com/dotnet/announcements/issues/474
- https://github.com/dotnet/runtime/issues/135705
- https://github.com/dotnet/runtime
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96222
Related operational evidence
Explicit CVE identifiers- Improper certificate validation in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network. · Advisory content revised · 1 Nov 2026
- Active Directory Federation Services (AD FS) Spoofing Vulnerability · Published vulnerability · 13 Oct 2026
- Microsoft Patch Tuesday for October 2026 — Snort rules and prominent vulnerabilities · Product change · 13 Oct 2026