CVE-2025-21334

HIGH KEV

Windows Hyper-V NT Kernel Integration VSP - Use-After-Free Elevation of Privilege

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2025-21334 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added January 14, 2025.

Description

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

References (2)

Core 2

Scores

CVSS v3 7.8
EPSS 0.0580
EPSS Percentile 90.8%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation active
Automatable no
Technical Impact total

Details

CISA KEV 2025-01-14
VulnCheck KEV 2025-01-14
ENISA EUVD EUVD-2025-2399
CWE
CWE-416
Status published
Products (16)
Microsoft/Windows 10 Version 21H2 10.0.19044.0 - 10.0.19044.5371
Microsoft/Windows 10 Version 22H2 10.0.19045.0 - 10.0.19045.5371
Microsoft/Windows 11 version 22H2 10.0.22621.0 - 10.0.22621.4751
Microsoft/Windows 11 version 22H3 10.0.22631.0 - 10.0.22631.4751
Microsoft/Windows 11 Version 23H2 10.0.22631.0 - 10.0.22631.4751
Microsoft/Windows 11 Version 24H2 10.0.26100.0 - 10.0.26100.2894
Microsoft/Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.0 - 10.0.25398.1369
Microsoft/Windows Server 2025 10.0.26100.0 - 10.0.26100.2894
Microsoft/Windows Server 2025 (Server Core installation) 10.0.26100.0 - 10.0.26100.2894
microsoft/windows_10_21h2 < 10.0.19044.5371
... and 6 more
Published Jan 14, 2025
KEV Added Jan 14, 2025
Tracked Since Feb 18, 2026