Microsoft Windows VBS Enclave Privilege Escalation Vulnerability

A heap-based buffer overflow vulnerability has been identified in the Windows Virtualization-Based Security (VBS) Enclave. This vulnerability allows an authorized attacker to locally elevate privileges. It affects multiple Windows 11 versions, Windows Server 2022, and Windows Server 2025.

Impact

Exploitation of this vulnerability could lead to unauthorized privilege escalation, allowing an attacker to gain Virtual Trust Level 2 (VTL2) 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 KB5074109 for Windows 11 and KB5073379 for Windows Server 2025.