CVE-2026-50324

Published: Jul 14, 2026Modified: Jul 22, 2026

5.9

Vector

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

Exploitability: 2.2 / Impact: 3.6

Source: secure@microsoft.com (Secondary)

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 (10)

Products: Microsoft: Windows 10 1607, Windows 10 1809, Windows Server 2012, Windows Server 2016, Windows Server 2019, Windows Server 2022, Windows Server 2025

7 products

Configuration A

10 vulnerable

Vulnerable Software	Affected Versions
Microsoft Windows 10 1607	Before 10.0.14393.9339
Microsoft Windows 10 1607	Before 10.0.14393.9339
Microsoft Windows 10 1809	Before 10.0.17763.9020
Microsoft Windows 10 1809	Before 10.0.17763.9020
Microsoft Windows Server 2012	All versions
Microsoft Windows Server 2012	Version r2
Microsoft Windows Server 2016	Before 10.0.14393.9339
Microsoft Windows Server 2019	Before 10.0.17763.9020
Microsoft Windows Server 2022	Before 10.0.20348.5386
Microsoft Windows Server 2025	Before 10.0.26100.33158

Related CWEs

CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')

The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.

References (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50324

Source: secure@microsoft.com

PatchVendor Advisory

Timeline

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