SB2025051373 - Privilege escalation in Microsoft Windows ancillary function driver for WinSock
Published: May 13, 2025
Security Bulletin ID
SB2025051373
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2025-32709)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error in Windows Ancillary Function Driver for WinSock. A local user can execute arbitrary code with SYSTEM privileges.
Note, the vulnerability is being actively exploited in the wild.
Remediation
Install update from vendor's website.