Improper access control in Windows and Windows Server - CVE-2021-36934
Published: July 21, 2021 / Updated: August 23, 2023
Vulnerability identifier: #VU55140
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:A/U:Clear
CVE-ID: CVE-2021-36934
CWE-ID: CWE-284
Exploitation vector: Local access
Exploit availability:
The vulnerability is being exploited in the wild
Vendor: Microsoft
Affected software:
Windows
Windows Server
Windows
Windows Server
Detailed vulnerability description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to overly permissive Access Control Lists (ACLs) on multiple system files, including the Security Accounts Manager (SAM) database. A local user can run arbitrary code with SYSTEM privileges.
How to mitigate CVE-2021-36934
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.