CVE-2022-34705: 
vulnerability analysis and mitigation

Windows Defender Credential Guard Elevation of Privilege Vulnerability was identified and assigned CVE-2022-34705. The vulnerability was discovered and recorded on June 27, 2022, affecting various versions of Microsoft Windows including Windows 10 (versions 20H2, 21H1, 21H2, 1809), Windows 11 (ARM64 and x64), and Windows Server (2016 version 20H2 and 2019). This vulnerability is distinct from CVE-2022-35771 (MITRE CVE).

The vulnerability has been classified as a Use After Free (CWE-416) weakness. Microsoft has assessed the severity with 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, low attack complexity, low privileges, and no user interaction, while potentially impacting confidentiality, integrity, and availability at high levels (NVD).

The vulnerability presents an elevation of privilege risk in Windows Defender Credential Guard, potentially allowing attackers to gain higher levels of system access. Given the CVSS scoring, successful exploitation could result in high impacts on system confidentiality, integrity, and availability (Microsoft Security).

Microsoft has released security updates to address this vulnerability through their standard update channels. Users and administrators of affected systems should apply the appropriate patches through Windows Update (Microsoft Security).