High MSRC-CVE-2025-29955 1 CVE

Windows Hyper-V Denial of Service Vulnerability

Published May 13, 2025 · Updated May 13, 2025

Vendor: Microsoft

Summary

Impact: Denial of Service. Microsoft rating: Important. Not known to be exploited — Exploitation Unlikely. Customer action: Required.

Details

Security updates
10.0.26100.4061 — https://support.microsoft.com/help/5058411
10.0.26100.3981 — https://support.microsoft.com/help/5058497
10.0.25398.1611 — https://support.microsoft.com/help/5058384

Vulnerabilities 1

Medium 6.2

CVE-2025-29955

Windows Hyper-V Denial of Service Vulnerability

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

Microsoft Windows Server 2025 Windows Server 2025 (Server Core installation) Windows 11 Version 24H2 Windows

May 13, 2025

Revision history

2025-05-13 #1
Information published.

References

CVE-2025-29955 Windows Hyper-V Denial of Service Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-29955
Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
Common Vulnerability Scoring System
https://www.first.org/cvss