CVE-2026-96252

CVE-2026-96252 · Active Directory Federation Services (AD FS) Spoofing Vulnerability

This page contains facts from public vulnerability sources. Check the original advisory before updating.

Improper verification of cryptographic signature in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network.

CVSS 9.1 · Critical · EPSS 0.5% · Fix available

Published: 2026-10-13T19:01:17.411Z
Updated: 2026-10-23T22:30:32.087Z

Affected products and versions

windows 10 version 1607
Versions
- ≥ 10.0.14393.0, < 10.0.14393.9612: Affected (custom)
Update to 10.0.14393.9612
windows 10 version 1809
Versions
- ≥ 10.0.17763.0, < 10.0.17763.9376: Affected (custom)
Update to 10.0.17763.9376
windows server 2012
Versions
- ≥ 6.2.9200.0, < 6.2.9200.26434: Affected (custom)
Update to 6.2.9200.26434
windows server 2012 (server core installation)
Versions
- ≥ 6.2.9200.0, < 6.2.9200.26434: Affected (custom)
Update to 6.2.9200.26434
windows server 2012 r2
Versions
- ≥ 6.3.9600.0, < 6.3.9600.23470: Affected (custom)
Update to 6.3.9600.23470
windows server 2012 r2 (server core installation)
Versions
- ≥ 6.3.9600.0, < 6.3.9600.23470: Affected (custom)
Update to 6.3.9600.23470
windows server 2016
Versions
- ≥ 10.0.14393.0, < 10.0.14393.9612: Affected (custom)
Update to 10.0.14393.9612
windows server 2016 (server core installation)
Versions
- ≥ 10.0.14393.0, < 10.0.14393.9612: Affected (custom)
Update to 10.0.14393.9612
windows server 2019
Versions
- ≥ 10.0.17763.0, < 10.0.17763.9376: Affected (custom)
Update to 10.0.17763.9376
windows server 2019 (server core installation)
Versions
- ≥ 10.0.17763.0, < 10.0.17763.9376: Affected (custom)
Update to 10.0.17763.9376
windows server 2022
Versions
- ≥ 10.0.20348.0, < 10.0.20348.5761: Affected (custom)
Update to 10.0.20348.5761
windows server 2025
Versions
- ≥ 10.0.26100.0, < 10.0.26100.33650: Affected (custom)
Update to 10.0.26100.33650
windows server 2025 (server core installation)
Versions
- ≥ 10.0.26100.0, < 10.0.26100.33650: Affected (custom)
Update to 10.0.26100.33650

Original sources

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