CVE-2020-0843: 
vulnerability analysis and mitigation

An elevation of privilege vulnerability (CVE-2020-0843) exists in Windows Installer due to how it handles certain filesystem operations. The vulnerability was disclosed in March 2020 and affects various versions of Microsoft Windows operating systems. This vulnerability is unique from similar issues tracked as CVE-2020-0779, CVE-2020-0798, CVE-2020-0814, and CVE-2020-0842 (NVD).

The vulnerability has been assigned a CVSS v3.1 base score of 7.8 (HIGH) with the following vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. This indicates that the vulnerability requires local access and low privileges to exploit, but can result in high impacts to confidentiality, integrity, and availability (NVD).

If successfully exploited, this vulnerability could allow an attacker to gain elevated privileges on the affected system. The attacker would first need to have unprivileged execution capabilities on the target system before attempting to exploit this vulnerability (NVD).

Microsoft has released security updates to address this vulnerability. Users should apply the appropriate security updates for their affected Windows systems through Windows Update or Microsoft Update Catalog (MSRC).