CVE-2025-29955: Windows Hyper-V Denial of Service Vulnerability

Overview

Severity

Medium (CVSS 6.2)

CVSS Vector

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

Category

Denial of Service

Exploit Status

Not Exploited

Exploitation Likelihood

Unlikely

Patch Tuesday

2025-May

Released

2025-05-13

EPSS Score

0.99% (percentile: 76.9%)

Description

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

Affected Products (4)

Windows

• Windows Server 2025 (Server Core installation)
• Windows Server 2022, 23H2 Edition (Server Core installation)
• Windows 11 Version 24H2 for x64-based Systems
• Windows Server 2025

Security Updates (3)

• 5058411
• 5058497
• 5058384

Acknowledgments

MORSE with <a href="https://microsoft.com/">Microsoft</a>

Revision History

• 2025-05-13: Information published.