#VU58952 Permissions, Privileges, and Access Controls in Windows and Windows Server - CVE-2021-43893
Published: December 14, 2021 / Updated: February 14, 2022
Vulnerability identifier: #VU58952
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2021-43893
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerable software:
Windows
Windows Server
Windows
Windows Server
Software vendor:
Microsoft
Microsoft
Description
The vulnerability allows a remote authenticated attacker to escalate privileges on the system.
The vulnerability exists due to application does not properly impose security restrictions in Windows Encrypting File System (EFS), which leads to security restrictions bypass and privilege escalation.
Remediation
Install updates from vendor's website.