CVE-2025-21367
vulnerability analysis and mitigation

Overview

CVE-2025-21367 is a Windows Win32 Kernel Subsystem Elevation of Privilege Vulnerability that was disclosed on February 11, 2025. This vulnerability affects various versions of Microsoft Windows, including Windows 10, Windows 11, and Windows Server editions (NVD, CVE).

Technical details

The vulnerability has been assigned a CVSS v3.1 base score of 7.8 (HIGH) with the vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. The vulnerability is classified as CWE-416 (Use After Free) according to Microsoft's assessment (NVD).

Impact

This vulnerability could allow an attacker to gain elevated privileges on affected systems. The CVSS score indicates high potential impact on confidentiality, integrity, and availability of the system when successfully exploited (Rapid7).

Mitigation and workarounds

Microsoft has released security updates to address this vulnerability. The fixes are available through various KB updates including KB5051974 for Windows 10, KB5051989 for Windows 11, and KB5051987 for Windows Server 2025 (Rapid7).

Additional resources


SourceThis report was generated using AI

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