CVE-2026-50647

HighCVSS 7.5/10Last modified Jul 24, 2026

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-835

Affected software

VendorProductVersions
MicrosoftMicrosoft .NET Framework 3.5 AND 4.7.2>= 4.7.0, < 2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0
MicrosoftMicrosoft .NET Framework 3.5 AND 4.8>= 4.8.0, < 2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0
MicrosoftMicrosoft .NET Framework 3.5 AND 4.8.1>= 4.8.1, < 2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0
MicrosoftMicrosoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2>= 4.7.0, < 4.7.4143.0
MicrosoftMicrosoft .NET Framework 4.8>= 4.8.0, < 4.8.4803.0
MicrosoftMicrosoft .NET Framework 4.8.1>= 4.8.0.0, < 4.8.9340.0
MicrosoftWindows 10 Version 1607>= 10.0.14393.0, < 10.0.14393.9339
MicrosoftWindows 10 Version 1809>= 10.0.17763.0, < 10.0.17763.9020
MicrosoftWindows 10 Version 21H2>= 10.0.19044.0, < 10.0.19044.7548
MicrosoftWindows 10 Version 22H2>= 10.0.19045.0, < 10.0.19045.7548
MicrosoftWindows 11 Version 24H2>= 10.0.26100.0, < 10.0.26100.8875
MicrosoftWindows 11 Version 25H2>= 10.0.26200.0, < 10.0.26200.8875
MicrosoftWindows 11 version 26H1>= 10.0.28000.0, < 10.0.28000.2525
MicrosoftWindows Server 2012>= 6.2.9200.0, < 6.2.9200.26226
MicrosoftWindows Server 2012 (Server Core installation)>= 6.2.9200.0, < 6.2.9200.26226
MicrosoftWindows Server 2012 R2>= 6.3.9600.0, < 6.3.9600.23291
MicrosoftWindows Server 2012 R2 (Server Core installation)>= 6.3.9600.0, < 6.3.9600.23291
MicrosoftWindows Server 2016>= 10.0.14393.0, < 10.0.14393.9339
MicrosoftWindows Server 2016 (Server Core installation)>= 10.0.14393.0, < 10.0.14393.9339
MicrosoftWindows Server 2019>= 10.0.17763.0, < 10.0.17763.9020
MicrosoftWindows Server 2019 (Server Core installation)>= 10.0.17763.0, < 10.0.17763.9020
MicrosoftWindows Server 2022>= 10.0.20348.0, < 10.0.20348.5386
MicrosoftWindows Server 2025>= 10.0.26100.0, < 10.0.26100.33158
MicrosoftWindows Server 2025 (Server Core installation)>= 10.0.26100.0, < 10.0.26100.33158

References

Timeline

Published
Jul 14, 2026
Last modified
Jul 24, 2026
NVD status
Analyzed

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CVE-2026-50647: High severity, CVSS 7.5 | Vulnix