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 elevate privileges locally. The issue arises from improper memory management, leading to a use-after-free condition that can be exploited to gain higher privileges on the system.

Impact

Exploitation of this vulnerability could allow an attacker to gain SYSTEM privileges.

Remediation

Users can apply the security update for this vulnerability, which is available through the Microsoft Update Catalog. Specific update details can be found in the Microsoft Knowledge Base articles KB5094122, KB5094126, KB5094127, KB5094041, KB5094042, KB5094123, KB5094125, KB5094128, and KB5093998.