CVE-2025-29955
vulnerability analysis and mitigation

Overview

CVE-2025-29955 is a vulnerability discovered in Windows Hyper-V that was disclosed on May 13, 2025. The vulnerability stems from improper input validation in Windows Hyper-V that allows an unauthorized attacker to deny service locally (NVD, Wiz).

Technical details

The vulnerability has been classified under CWE-20 (Improper Input Validation) and has been assigned a CVSS v3.1 base score of 6.2 (MEDIUM) with the vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. This indicates that the vulnerability requires local access, has low attack complexity, requires no privileges, and needs no user interaction to exploit, while potentially causing high availability impact (NVD).

Impact

When successfully exploited, this vulnerability enables an unauthorized attacker to perform a denial of service attack locally on the affected Windows Hyper-V system (NVD, Wiz).

Mitigation and workarounds

Microsoft has addressed this vulnerability as part of their May 2025 Patch Tuesday updates. Users and administrators are strongly advised to apply the security updates through Windows Update or enterprise management tools (Wiz).

Additional resources


SourceThis report was generated using AI

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