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Vulnerability DatabaseCVE-2021-40443
CVE-2021-40443:
vulnerability analysis and mitigation
Overview
Windows Common Log File System Driver Elevation of Privilege Vulnerability (CVE-2021-40443) was disclosed on September 2, 2021, affecting various versions of Microsoft Windows operating systems. This vulnerability is distinct from CVE-2021-40466 and CVE-2021-40467 (MITRE CVE, NVD).
Technical details
The vulnerability has been assigned 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. It is classified under CWE-269 (Improper Privilege Management). The vulnerability requires local access with low attack complexity and low privileges, but no user interaction is needed (NVD).
Impact
If successfully exploited, this vulnerability could allow an attacker to gain elevated privileges on the affected system, 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. Multiple KB updates are available for affected systems including KB5006667, KB5006669, KB5006670, KB5006672, KB5006674, KB5006675, KB5006699, KB5006729, and KB5006732 (Rapid7).
Additional resources
Source: This report was generated using AI
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