CVE-2024-20689: 
vulnerability analysis and mitigation

A Secure Boot Security Feature Bypass Vulnerability, identified as CVE-2024-20689, was discovered and reported to Microsoft. The vulnerability was initially received on April 9, 2024, and affects Microsoft Windows Server 2012 and Windows Server 2012 R2 systems (NVD).

The vulnerability has been assigned a CVSS v3.1 base score of 7.1 (HIGH) with the following vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H. Microsoft has classified this as a Stack-based Buffer Overflow (CWE-121) vulnerability (NVD).

The vulnerability affects the Secure Boot security feature and could potentially lead to a security feature bypass, impacting system integrity and security. When successfully exploited, it could result in high levels of compromise to confidentiality, integrity, and availability of the affected systems (Microsoft Advisory).

The vulnerability requires adjacent network access (AV:A) with high attack complexity (AC:H). No privileges are required (PR:N), but user interaction is required (UI:R) for successful exploitation (NVD).

Microsoft has released security updates to address this vulnerability. The fixes are available through KB5036969 for Windows Server 2012 and KB5036960 for Windows Server 2012 R2 (Rapid7).