CVE-2025-21213: 
vulnerability analysis and mitigation

CVE-2025-21213 is a Secure Boot Security Feature Bypass Vulnerability that was disclosed on January 14, 2025. The vulnerability affects multiple versions of Microsoft Windows operating systems, including Windows 10, Windows 11, and various Windows Server editions (NVD).

The vulnerability has been assigned a CVSS v3.1 base score of 4.6 (Medium) with the following vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. This indicates that the vulnerability requires physical access, has low attack complexity, requires no privileges, needs no user interaction, has unchanged scope, and can impact confidentiality but not integrity or availability (NVD).

The vulnerability primarily affects system confidentiality, as indicated by the CVSS metrics showing high confidentiality impact while having no impact on integrity or availability. This suggests that successful exploitation could lead to unauthorized access to sensitive system information (NVD).

Microsoft has released security updates to address this vulnerability across affected Windows versions, including Windows 10 (various versions), Windows 11, and Windows Server editions. Users are advised to apply the latest security updates to mitigate this vulnerability (Microsoft Advisory).