CVE-2025-21218 Windows Kerberos Denial of Service Vulnerability

Description

Windows Kerberos Denial of Service Vulnerability

Affected products and versions

Product	Affected versions	Fixed in
Windows Server 2019 10.0	10.0.17763.0 → < 10.0.17763.6775	10.0.17763.6775
Windows Server 2019 (Server Core installation) 10.0	10.0.17763.0 → < 10.0.17763.6775	10.0.17763.6775
Windows Server 2022 10.0	10.0.20348.0 → < 10.0.20348.3091	10.0.20348.3091
Windows Server 2025 (Server Core installation) 10.0	10.0.26100.0 → < 10.0.26100.2894	10.0.26100.2894
Windows Server 2022, 23H2 Edition (Server Core installation) 10.0	10.0.25398.0 → < 10.0.25398.1369	10.0.25398.1369
Windows Server 2025 10.0	10.0.26100.0 → < 10.0.26100.2894	10.0.26100.2894
Windows Server 2016 10.0	10.0.14393.0 → < 10.0.14393.7699	10.0.14393.7699
Windows Server 2016 (Server Core installation) 10.0	10.0.14393.0 → < 10.0.14393.7699	10.0.14393.7699
Windows Server 2012 6.2	6.2.9200.0 → < 6.2.9200.25273	6.2.9200.25273

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Product	Affected versions	Fixed in
Windows Server 2012 (Server Core installation) 6.2	6.2.9200.0 → < 6.2.9200.25273	6.2.9200.25273
Windows Server 2012 R2 6.3	6.3.9600.0 → < 6.3.9600.22371	6.3.9600.22371
Windows Server 2012 R2 (Server Core installation) 6.3	6.3.9600.0 → < 6.3.9600.22371	6.3.9600.22371

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