CVE-2020-0689: 
vulnerability analysis and mitigation

A security feature bypass vulnerability (CVE-2020-0689) was discovered in Microsoft Secure Boot, identified as 'Microsoft Secure Boot Security Feature Bypass Vulnerability'. The vulnerability was initially reported in November 2019 and publicly disclosed in February 2020, affecting various versions of Microsoft Windows including Windows 10, Windows 8.1, and Windows RT 8.1 (MITRE, NVD).

The vulnerability has been assigned a CVSS v3.1 base score of 6.7 (Medium) with the vector string CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H. This indicates that the vulnerability requires local access, low attack complexity, and high privileges, but requires no user interaction. The potential impact on confidentiality, integrity, and availability is rated as high (NVD).

The vulnerability could allow an attacker to bypass the Secure Boot feature, which is a security feature that helps prevent unauthorized operating systems and malicious software from loading during the system start-up process. A successful exploit could compromise the security features designed to verify system integrity during boot (MITRE).

Microsoft has released security patches to address this vulnerability. Users should apply the appropriate security updates through Windows Update to protect their systems (MSRC).