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 0.0131
EPSS Percentile 80.1%
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 (7)
microsoft/windows_server_2012
microsoft/windows_server_2012 r2
microsoft/windows_server_2016 < 10.0.14393.7699
microsoft/windows_server_2019 < 10.0.17763.6775
microsoft/windows_server_2022 < 10.0.20348.3091
microsoft/windows_server_2022_23h2 < 10.0.25398.1369
microsoft/windows_server_2025 < 10.0.26100.2894
Published Jan 14, 2025
Tracked Since Feb 18, 2026