Microsoft Windows Ancillary Function Driver for WinSock Privilege Escalation Vulnerability

A use-after-free vulnerability has been identified in the Windows Ancillary Function Driver for WinSock. This vulnerability allows an authorized attacker to locally elevate privileges. The issue arises from improper handling of memory, leading to a race condition that can be exploited to gain SYSTEM privileges.

Impact

Exploitation of this vulnerability could lead to unauthorized privilege escalation, allowing an attacker to gain SYSTEM privileges.

Remediation

Users can apply the security update provided by Microsoft to address this vulnerability. Instructions for downloading the security update are available on the Microsoft Update Catalog. Specific update details can be found in the Microsoft Knowledge Base articles KB5094122, KB5094123, KB5094125, KB5094126, KB5094127, KB5094041, KB5094042, and KB5094128.