CVE-2025-21218

HIGH

Windows Server 2012, 2016, 2019, 2022, 2022 23H2, 2025 - DoS via Kerberos

Title source: llm
STIX 2.1

Description

Windows Kerberos Denial of Service Vulnerability

References (1)

Core 1
Core References
Patch, Vendor Advisory vendor-advisory patch
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21218

Scores

CVSS v3 7.5
EPSS 0.0254
EPSS Percentile 83.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-400
Status published
Products (19)
Microsoft/Windows Server 2012 6.2.9200.0 - 6.2.9200.25273
Microsoft/Windows Server 2012 (Server Core installation) 6.2.9200.0 - 6.2.9200.25273
Microsoft/Windows Server 2012 R2 6.3.9600.0 - 6.3.9600.22371
Microsoft/Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 - 6.3.9600.22371
Microsoft/Windows Server 2016 10.0.14393.0 - 10.0.14393.7699
Microsoft/Windows Server 2016 (Server Core installation) 10.0.14393.0 - 10.0.14393.7699
Microsoft/Windows Server 2019 10.0.17763.0 - 10.0.17763.6775
Microsoft/Windows Server 2019 (Server Core installation) 10.0.17763.0 - 10.0.17763.6775
Microsoft/Windows Server 2022 10.0.20348.0 - 10.0.20348.3091
Microsoft/Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.0 - 10.0.25398.1369
... and 9 more
Published Jan 14, 2025
Tracked Since Feb 18, 2026