Permissions, Privileges, and Access Controls in Windows and Windows Server - CVE-2023-21746
Published: January 10, 2023 / Updated: June 20, 2025
Vulnerability identifier: #VU70998
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Clear
CVE-ID: CVE-2023-21746
CWE-ID: CWE-264
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 application does not properly impose security restrictions in Windows NTLM, which leads to security restrictions bypass and privilege escalation.
How to mitigate CVE-2023-21746
Install updates from vendor's website.