CVE-2021-43893

HIGH

Windows Encrypting File System - Privilege Escalation

Title source: llm

Windows Encrypting File System (EFS) Elevation of Privilege Vulnerability

Core 2

Core References

Patch, Vendor Advisory x_refsource_misc

Third Party Advisory, VDB Entry x_refsource_misc

CVSS v3 7.5

EPSS 0.0662

EPSS Percentile 93.0%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-668

Status published

Products (20)

microsoft/windows_10 (2 CPE variants)

microsoft/windows_10 20h2 (3 CPE variants)

microsoft/windows_10 21h1 (3 CPE variants)

microsoft/windows_10 21h2 (3 CPE variants)

microsoft/windows_10 1607 (2 CPE variants)

microsoft/windows_10 1809 (3 CPE variants)

microsoft/windows_10 1909 (3 CPE variants)

microsoft/windows_10 2004 (3 CPE variants)

microsoft/windows_11 (2 CPE variants)

microsoft/windows_7 (2 CPE variants)

... and 10 more

Published Dec 15, 2021

Tracked Since Feb 18, 2026