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Vulnerability DatabaseCVE-2021-40476
CVE-2021-40476:
vulnerability analysis and mitigation
Overview
Windows AppContainer Elevation of Privilege Vulnerability (CVE-2021-40476) was disclosed on October 12, 2021. This vulnerability affects various versions of Microsoft Windows, including Windows 10, Windows 11, and Windows Server installations (NVD).
Technical details
The vulnerability has received a CVSS v3.1 base score of 7.8 (High) from NIST with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, while Microsoft assessed it with a score of 7.5 (High) with vector string CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H. The vulnerability is classified under CWE-522 (Insufficiently Protected Credentials) (NVD).
Impact
If successfully exploited, this vulnerability could allow an attacker to gain elevated privileges within a Windows AppContainer context, potentially leading to unauthorized access to sensitive information and system resources (NVD).
Mitigation and workarounds
Microsoft has released security updates to address this vulnerability across affected Windows versions. Updates are available through various KB articles including KB5006670 for Windows 10 versions 2004, 20H2, and 21H1, KB5006674 for Windows 11, and KB5006669 for Windows Server 2016 (Rapid7).
Additional resources
Source: This report was generated using AI
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