CVE-2025-21321
vulnerability analysis and mitigation

Overview

Windows Kernel Memory Information Disclosure Vulnerability (CVE-2025-21321) was disclosed on January 14, 2025. This vulnerability affects multiple versions of Microsoft Windows operating systems, including Windows 10, Windows 11, and Windows Server editions (NVD).

Technical details

The vulnerability has been assigned a CVSS v3.1 base score of 5.5 (Medium) with the vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N. This indicates that the vulnerability requires local access, low attack complexity, low privileges, and no user interaction. It can result in high confidentiality impact but has no impact on integrity or availability (NVD).

Impact

The vulnerability allows an attacker to access sensitive information from kernel memory, potentially leading to the disclosure of confidential system information (Microsoft Advisory).

Mitigation and workarounds

Microsoft has released security updates to address this vulnerability across affected Windows versions. Users should apply the relevant KB updates for their specific Windows version, including KB5050013 for Windows 10 1507, KB5049993 for Windows 10 1607, and various other patches for different versions (Rapid7).

Additional resources


SourceThis report was generated using AI

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