CVE-2021-26870: 
vulnerability analysis and mitigation

Overview

Windows Projected File System Elevation of Privilege Vulnerability, identified as CVE-2021-26870, was disclosed on March 11, 2021. This vulnerability affects multiple versions of Microsoft Windows 10 and Windows Server 2016, including versions 1803, 1809, 1909, 2004, and 20H2 (NVD).

Technical details

The vulnerability has received a CVSS v3.1 base 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. This indicates local access is required, with low attack complexity and privilege requirements, no user interaction needed, and potential for high impacts on confidentiality, integrity, and availability (NVD).

Impact

The vulnerability could allow an attacker to gain elevated privileges on affected systems, potentially leading to complete system compromise with high impacts on confidentiality, integrity, and availability (NVD).

Mitigation and workarounds

Microsoft has released security updates to address this vulnerability. Users should apply the appropriate patches through the Microsoft security advisory (Microsoft Advisory).

Additional resources


Source: This report was generated using AI

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