CVE-2025-47978

Windows Kerberos Denial of Service Vulnerability

State: Published
Severity: 6.5 Medium
Published: Jul 8, 2025
Updated: Feb 13, 2026
Reserved: May 14, 2025

Description

Out-of-bounds read in Windows Kerberos allows an authorized attacker to deny service over a network.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C	microsoft

Weaknesses

CWE-125 Out-of-bounds Read

Affected Products

Product	Versions
Windows Server 2022Microsoft	10.0.20348.0 to before 10.0.20348.3932Affected
Windows Server 2022, 23H2 Edition (Server Core installation)Microsoft	10.0.25398.0 to before 10.0.25398.1732Affected
Windows Server 2025Microsoft	10.0.26100.0 to before 10.0.26100.4652Affected
Windows Server 2025 (Server Core installation)Microsoft	10.0.26100.0 to before 10.0.26100.4652Affected

References

Windows Kerberos Denial of Service Vulnerabilityvendor-advisorypatch

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