Active Directory Federation Services (AD FS) Spoofing Vulnerability
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-96252US | critical9.1 | — | ||
Improper verification of cryptographic signature in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network. | ||||
references
External citations — patches, advisories, analysis.
- CVE-2026-96252 Active Directory Federation Services (AD FS) Spoofing Vulnerability - CSAFself
- CVE-2026-96252 Active Directory Federation Services (AD FS) Spoofing Vulnerability - HTMLself
- Microsoft Support Lifecycleexternal
- Common Vulnerability Scoring Systemexternal
- Microsoft Exploitability Indexexternal
remediations (16)
- FixedWindows 10 Version 1607 for 32-bit Systems
10.0.14393.9612:Security Update:https://support.microsoft.com/help/5126868
https://support.microsoft.com/help/5126868 - FixedWindows 10 Version 1607 for x64-based Systems
10.0.14393.9612:Security Update:https://support.microsoft.com/help/5126868
https://support.microsoft.com/help/5126868 - FixedWindows 10 Version 1809 for 32-bit Systems
10.0.17763.9376:Security Update:https://support.microsoft.com/help/5126651
https://support.microsoft.com/help/5126651 - FixedWindows 10 Version 1809 for x64-based Systems
10.0.17763.9376:Security Update:https://support.microsoft.com/help/5126651
https://support.microsoft.com/help/5126651 - FixedWindows Server 2012
6.2.9200.26434:Security Update:https://support.microsoft.com/help/5126835
https://support.microsoft.com/help/5126835 - FixedWindows Server 2012 (Server Core installation)
6.2.9200.26434:Security Update:https://support.microsoft.com/help/5126835
https://support.microsoft.com/help/5126835 - FixedWindows Server 2012 R2
6.3.9600.23470:Security Update:https://support.microsoft.com/help/5126836
https://support.microsoft.com/help/5126836 - FixedWindows Server 2012 R2 (Server Core installation)
6.3.9600.23470:Security Update:https://support.microsoft.com/help/5126836
https://support.microsoft.com/help/5126836 - FixedWindows Server 2016
10.0.14393.9612:Security Update:https://support.microsoft.com/help/5126868
https://support.microsoft.com/help/5126868 - FixedWindows Server 2016 (Server Core installation)
10.0.14393.9612:Security Update:https://support.microsoft.com/help/5126868
https://support.microsoft.com/help/5126868 - FixedWindows Server 2019
10.0.17763.9376:Security Update:https://support.microsoft.com/help/5126651
https://support.microsoft.com/help/5126651 - FixedWindows Server 2019 (Server Core installation)
10.0.17763.9376:Security Update:https://support.microsoft.com/help/5126651
https://support.microsoft.com/help/5126651 - FixedWindows Server 2022
10.0.20348.5761:Security Update:https://support.microsoft.com/help/5126655
https://support.microsoft.com/help/5126655 - FixedWindows Server 2022 (Server Core installation)
10.0.20348.5761:Security Update:https://support.microsoft.com/help/5126655
https://support.microsoft.com/help/5126655 - FixedWindows Server 2025
10.0.26100.33650:Security Update:https://support.microsoft.com/help/5126646
https://support.microsoft.com/help/5126646 - FixedWindows Server 2025 (Server Core installation)
10.0.26100.33650:Security Update:https://support.microsoft.com/help/5126646
https://support.microsoft.com/help/5126646
Advisories like this name the exposed products attackers go after on your perimeter. See what is exposed on your perimeter with a free passive scan.
Free scan