CVE-2020-16958: 
vulnerability analysis and mitigation

Windows Backup Engine Elevation of Privilege Vulnerability (CVE-2020-16958) was identified and disclosed in December 2020. This vulnerability affects various versions of Microsoft Windows operating systems including Windows 10 and Windows Server. The vulnerability was assigned a CVSS v3.1 base score of 7.8 (High) by Microsoft Corporation (NVD).

The vulnerability is classified as an Elevation of Privilege vulnerability in the Windows Backup Engine. It received a CVSS v3.1 score of 7.8 (High) with the vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H, indicating local access required, low attack complexity, low privileges required, no user interaction needed, and high impact on confidentiality, integrity, and availability (NVD).

If successfully exploited, this vulnerability could allow an attacker to gain elevated privileges on affected systems. The high CVSS score indicates that successful exploitation could result in complete compromise of system confidentiality, integrity, and availability (Rapid7).

The vulnerability requires local access and low privileges for exploitation. The attack complexity is rated as low, suggesting that the vulnerability is relatively straightforward to exploit once an attacker has the necessary local access (NVD).

Microsoft has released security updates to address this vulnerability. The fixes are available through various KB updates including KB4592438, KB4592440, KB4592446, KB4592449, KB4592464, and KB4593226 for affected Windows versions (Rapid7).