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Vulnerability · Published Jan 14, 2025 · Assigned by microsoft

CVE-2025-21218Windows Kerberos Denial of Service Vulnerability

High 7.5

In plain English

A high-severity uncontrolled resource consumption in Windows Server 2012 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.6% (higher than 86% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)2.6%top 14.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

Windows Kerberos Denial of Service Vulnerability

Affected products (as reported)

VendorProductVersions
Microsoft Windows Server 2012 6.2.9200.0 – before 6.2.9200.25273
Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.0 – before 6.2.9200.25273
Microsoft Windows Server 2012 R2 6.3.9600.0 – before 6.3.9600.22371
Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 – before 6.3.9600.22371
Microsoft Windows Server 2016 10.0.14393.0 – before 10.0.14393.7699
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0 – before 10.0.14393.7699
Microsoft Windows Server 2019 10.0.17763.0 – before 10.0.17763.6775
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0 – before 10.0.17763.6775
Microsoft Windows Server 2022 10.0.20348.0 – before 10.0.20348.3091
Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.0 – before 10.0.25398.1369
Microsoft Windows Server 2025 10.0.26100.0 – before 10.0.26100.2894
Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.0 – before 10.0.26100.2894

Weakness: CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C

References