PT-2025-20959 · Microsoft · Windows Hyper-V+1

Published 2025-05-13 · Updated 2025-05-19 · CVE-2025-29955

Positive Technologies (AI Summary)

CVSS v3.1

6.2

Medium

Base vector

AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Windows Hyper-V (affected versions not specified)

Description The issue is related to insufficient input validation in the Windows Hyper-V system, which can be exploited to cause a denial of service. This allows an unauthorized attacker to deny service locally. There is no information provided about the estimated number of potentially affected devices worldwide or real-world incidents where this issue was exploited.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2025-05577

CVE-2025-29955

Affected Products

Windows

Windows Hyper-V

References · 9

• https://osv.dev/vulnerability/CVE-2025-29955 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2025-29955 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-29955 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-05577 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-29955 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-29955 · Security Note
• https://twitter.com/windowsforum/status/1922524465100964180 · Twitter Post
• https://twitter.com/CVEnew/status/1922339797764575450 · Twitter Post
• https://t.me/cvenotify/122998 · Telegram Post