Microsoft Windows Ancillary Function Driver for WinSock Privilege Escalation Vulnerability

A heap-based buffer overflow vulnerability has been identified in the Windows Ancillary Function Driver for WinSock. This vulnerability allows an authorized attacker to elevate privileges locally. It affects multiple Windows products, including various versions of Windows Server, Windows 10, and Windows 11.

Impact

Exploitation of this vulnerability could lead to unauthorized privilege escalation, allowing an attacker to gain elevated rights on the affected system.

Remediation

Users can apply the security update available through the Microsoft Update Catalog. Specific update details can be found in the Microsoft Knowledge Base articles KB5066873, KB5066875, KB5066836, KB5066791, KB5066782, KB5066586, and KB5066835.