Improper access control in Windows and Windows Server - CVE-2025-33073
Published: June 10, 2025 / Updated: December 12, 2025
Vulnerability identifier: #VU110736
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Green
CVE-ID: CVE-2025-33073
CWE-ID: CWE-284
Exploitation vector: Remote 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 remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions in Windows SMB Client. A remote user can bypass implemented security restrictions and gain elevated privileges on the system.
How to mitigate CVE-2025-33073
Install updates from vendor's website.