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CVE-2026-50647 Loop with unreachable exit condition ('infinite loop') in Active Directory Federation Services (AD FS) allows an…

Description

Loop with unreachable exit condition ('infinite loop') in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.

Affected products and versions

Product Affected versions Fixed in
Windows 10 Version 1607 10.0 10.0.14393.0 → < 10.0.14393.9339 10.0.14393.9339
Windows 10 Version 1809 10.0 10.0.17763.0 → < 10.0.17763.9020 10.0.17763.9020
Windows 10 Version 21H2 10.0 10.0.19044.0 → < 10.0.19044.7548 10.0.19044.7548
Windows 10 Version 22H2 10.0 10.0.19045.0 → < 10.0.19045.7548 10.0.19045.7548
Windows 11 Version 24H2 10.0 10.0.26100.0 → < 10.0.26100.8875 10.0.26100.8875
Windows 11 Version 25H2 10.0 10.0.26200.0 → < 10.0.26200.8875 10.0.26200.8875
Windows 11 version 26H1 10.0 10.0.28000.0 → < 10.0.28000.2525 10.0.28000.2525
Windows Server 2012 6.2 6.2.9200.0 → < 6.2.9200.26226 6.2.9200.26226
Windows Server 2012 (Server Core installation) 6.2 6.2.9200.0 → < 6.2.9200.26226 6.2.9200.26226
Show the 16 other branches
Product Affected versions Fixed in
Windows Server 2012 R2 6.3 6.3.9600.0 → < 6.3.9600.23291 6.3.9600.23291
Windows Server 2012 R2 (Server Core installation) 6.3 6.3.9600.0 → < 6.3.9600.23291 6.3.9600.23291
Windows Server 2016 10.0 10.0.14393.0 → < 10.0.14393.9339 10.0.14393.9339
Windows Server 2016 (Server Core installation) 10.0 10.0.14393.0 → < 10.0.14393.9339 10.0.14393.9339
Windows Server 2019 10.0 10.0.17763.0 → < 10.0.17763.9020 10.0.17763.9020
Windows Server 2019 (Server Core installation) 10.0 10.0.17763.0 → < 10.0.17763.9020 10.0.17763.9020
Windows Server 2022 10.0 10.0.20348.0 → < 10.0.20348.5386 10.0.20348.5386
Windows Server 2025 10.0 10.0.26100.0 → < 10.0.26100.33158 10.0.26100.33158
Windows Server 2025 (Server Core installation) 10.0 10.0.26100.0 → < 10.0.26100.33158 10.0.26100.33158
Microsoft .NET Framework 3.5 3.5 3.5.0 → latest No fix stated
Microsoft .NET Framework 3.5 AND 4.7.2 4.7 4.7.0 → latest No fix stated
Microsoft .NET Framework 3.5 AND 4.8 4.8 4.8.0 → latest No fix stated
Microsoft .NET Framework 3.5 AND 4.8.1 4.8 4.8.1 → latest No fix stated
Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 4.7 4.7.0 → < 4.7.4143.0 4.7.4143.0
Microsoft .NET Framework 4.8 4.8 4.8.0 → < 4.8.4803.0 4.8.4803.0
Microsoft .NET Framework 4.8.1 4.8 4.8.0.0 → < 4.8.9340.0 4.8.9340.0
The 4535 CVEs of Windows 10 Version 1607 →
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