CVE-2025-29955

Windows Hyper-V Denial of Service Vulnerability

State: Published
Severity: 6.2 Medium
Published: May 13, 2025
Updated: Feb 13, 2026
Reserved: Mar 12, 2025

Description

Improper input validation in Windows Hyper-V allows an unauthorized attacker to deny service locally.

Scores

CVSS	Score	Vector	Source
3.1	6.2 Medium	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C	microsoft

Weaknesses

CWE-20 Improper Input Validation

Affected Products

Product	Versions
Windows 11 Version 24H2Microsoft	10.0.26100.0 to before 10.0.26100.4061Affected
Windows Server 2022, 23H2 Edition (Server Core installation)Microsoft	10.0.25398.0 to before 10.0.25398.1611Affected
Windows Server 2025Microsoft	10.0.26100.0 to before 10.0.26100.4061Affected
Windows Server 2025 (Server Core installation)Microsoft	10.0.26100.0 to before 10.0.26100.4061Affected

References

Windows Hyper-V Denial of Service Vulnerabilityvendor-advisorypatch

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.