CVE-2025-27479

Kerberos Key Distribution Proxy Service Denial of Service Vulnerability

State: Published
Severity: 7.5 High
Published: Apr 8, 2025
Updated: Aug 10, 2026
Reserved: Feb 26, 2025

Description

Insufficient resource pool in Windows Kerberos allows an unauthorized attacker to deny service over a network.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	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	microsoft

Weaknesses

CWE-410 Insufficient Resource Pool

Affected Products

Product	Versions
Windows Server 2012Microsoft	6.2.9200.0 to before 6.2.9200.25423Affected
Windows Server 2012 (Server Core installation)Microsoft	6.2.9200.0 to before 6.2.9200.25423Affected
Windows Server 2012 R2Microsoft	6.3.9600.0 to before 6.3.9600.22523Affected
Windows Server 2012 R2 (Server Core installation)Microsoft	6.3.9600.0 to before 6.3.9600.22523Affected
Windows Server 2016Microsoft	10.0.14393.0 to before 10.0.14393.7969Affected
Windows Server 2016 (Server Core installation)Microsoft	10.0.14393.0 to before 10.0.14393.7969Affected
Windows Server 2019Microsoft	10.0.17763.0 to before 10.0.17763.7136Affected
Windows Server 2019 (Server Core installation)Microsoft	10.0.17763.0 to before 10.0.17763.7136Affected
Windows Server 2022Microsoft	10.0.20348.0 to before 10.0.20348.3453Affected
Windows Server 2022, 23H2 Edition (Server Core installation)Microsoft	10.0.25398.0 to before 10.0.25398.1551Affected
Windows Server 2025Microsoft	10.0.26100.0 to before 10.0.26100.3775Affected
Windows Server 2025 (Server Core installation)Microsoft	10.0.26100.0 to before 10.0.26100.3775Affected

References

Kerberos Key Distribution Proxy Service Denial of Service Vulnerabilityvendor-advisorypatch

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