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Known exploited vulnerability · Microsoft

CVE-2025-21334: Microsoft Windows Hyper-V NT Kernel Integration VSP Use-After-Free Vulnerability

highCVSS 3.1 7.8Exploited

Windows Hyper-V NT Kernel Integration VSP Elevation of Privilege Vulnerability

Published Jan 14, 2025 · Updated Jun 17, 2026

Required action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Advisory details

From the National Vulnerability Database. This product uses the NVD API but is not endorsed or certified by the NVD.

Windows Hyper-V NT Kernel Integration VSP Elevation of Privilege Vulnerability

References

How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology

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