CVE-2021-43893

Windows Encrypting File System (EFS) Elevation of Privilege Vulnerability

Score

CVSS 3.1 7.5 High

Status

Modified - secure@microsoft.com

Published

2021-12-15

Last modified

2024-08-04

Weaknesses

CWE-668

Affected products

• Windows 10 (Microsoft)
• Windows 10 1507 (Microsoft)
• Windows 10 1607 (Microsoft)
• Windows 10 1809 (Microsoft)
• Windows 10 1909 (Microsoft)
• Windows 10 20H2 (Microsoft)
• Windows 10 21H1 (Microsoft)
• Windows 10 21H2 (Microsoft)
• Windows 11 (Microsoft)
• Windows 11 21H2 (Microsoft)
• Windows 7 (Microsoft)
• Windows 8.1 (Microsoft)
• Windows Rt 8.1 (Microsoft)
• Windows Server (Microsoft)
• Windows Server 2004 (Microsoft)
• Windows Server 2008 (Microsoft)
• Windows Server 2008 R2 (Microsoft)
• Windows Server 2008 Sp2 (Microsoft)
• Windows Server 2012 (Microsoft)
• Windows Server 2012 R2 (Microsoft)
• Windows Server 2016 (Microsoft)
• Windows Server 2019 (Microsoft)
• Windows Server 2022 (Microsoft)
• Windows Server 20H2 (Microsoft)

References

• http://packetstormsecurity.com/files/165560/Microsoft-Windows-EFSRPC-Arbitrary-File-Upload-Privilege-Escalation.html
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43893