CVE-2025-33071

Windows KDC Proxy Service (KPSSVC) Remote Code Execution Vulnerability

State: Published
Severity: 8.1 High
Published: Jun 10, 2025
Updated: Feb 26, 2026
Reserved: Apr 15, 2025

Description

Use after free in Windows KDC Proxy Service (KPSSVC) allows an unauthorized attacker to execute code over a network.

Scores

CVSS	Score	Vector	Source
3.1	8.1 High	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C	microsoft

Weaknesses

CWE-416 Use After Free

Affected Products

Product	Versions
Windows Server 2012Microsoft	6.2.9200.0 to before 6.2.9200.25522Affected
Windows Server 2012 (Server Core installation)Microsoft	6.2.9200.0 to before 6.2.9200.25522Affected
Windows Server 2012 R2Microsoft	6.3.9600.0 to before 6.3.9600.22620Affected
Windows Server 2012 R2 (Server Core installation)Microsoft	6.3.9600.0 to before 6.3.9600.22620Affected
Windows Server 2016Microsoft	10.0.14393.0 to before 10.0.14393.8148Affected
Windows Server 2016 (Server Core installation)Microsoft	10.0.14393.0 to before 10.0.14393.8148Affected
Windows Server 2019Microsoft	10.0.17763.0 to before 10.0.17763.7434Affected
Windows Server 2019 (Server Core installation)Microsoft	10.0.17763.0 to before 10.0.17763.7434Affected
Windows Server 2022Microsoft	10.0.20348.0 to before 10.0.20348.3807Affected
Windows Server 2022, 23H2 Edition (Server Core installation)Microsoft	10.0.25398.0 to before 10.0.25398.1665Affected
Windows Server 2025Microsoft	10.0.26100.0 to before 10.0.26100.4349Affected
Windows Server 2025 (Server Core installation)Microsoft	10.0.26100.0 to before 10.0.26100.4349Affected

References

Windows KDC Proxy Service (KPSSVC) Remote Code Execution Vulnerabilityvendor-advisorypatch

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