Microsoft Windows EFS Privilege Escalation Vulnerability

Vulnerability

A vulnerability allowing out-of-bounds read in the Windows Encrypting File System (EFS) has been identified. This flaw enables an authorized attacker to locally elevate privileges. The vulnerability affects multiple Windows versions, including Windows 10, Windows 11, Windows Server 2019, and Windows Server 2022.

Impact

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

Remediation

Users can download the security update for this vulnerability via the Microsoft Update Catalog. Specific update details can be found in the Microsoft Knowledge Base articles linked in the 'Security Updates' section.

Added: Apr 14, 2026, 10:56 PM
Updated: Apr 14, 2026, 10:56 PM

Vulnerability Rating

Custom Algorithm
spread
0.0
impact
7.5
exploitability
3.3
remediation
0.0
relevance
5.9
threat
0.0
urgency
2.9
incentive
0.0

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.