This vulnerability, identified as CVE-2025-21215 and classified under CWE-125 (Out-of-bounds Read), affects Microsoft Windows 10 Version 1507 (build 10.0.10240.0). It allows an attacker to bypass the Secure Boot security feature by exploiting an out-of-bounds read condition. The CVSS 3.1 vector indicates the attack requires physical access (AV:P), low attack complexity (AC:L), no privileges (PR:N), no user interaction (UI:N), and impacts confidentiality (C:H) without affecting integrity or availability. Microsoft has published an official fix for this vulnerability.

Successful exploitation of this vulnerability can lead to a bypass of the Secure Boot security feature, potentially allowing unauthorized code to run during system startup. The impact is limited to confidentiality compromise, with no direct integrity or availability effects reported. The attack requires physical access to the system.

An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft as detailed in the vendor advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21215 to remediate this vulnerability.