Microsoft Windows Ancillary Function Driver for WinSock Privilege Escalation Vulnerability

A null pointer dereference 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 null pointers, which could be exploited to gain higher-level permissions on the affected system.

Impact

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

Remediation

Users can apply the security updates provided by Microsoft to address this vulnerability. These security updates are available through the Microsoft Update Catalog. Specific update details can be found in the Microsoft Knowledge Base articles KB5063877, KB5063950, KB5063906, KB5063947, KB5063888, KB5063871, KB5063889, KB5063878, KB5064010, KB5063709, KB5063875, and KB5063899.