Microsoft Windows SMB Client Privilege Escalation Vulnerability

Vulnerability

A use-after-free vulnerability has been identified in the Windows SMB Client, allowing an authorized attacker to locally elevate privileges. This vulnerability arises from improper memory management, which can be exploited to gain higher-level access rights.

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 for this vulnerability, which is available through the Microsoft Update Catalog. Specific update details can be found in the Microsoft Knowledge Base articles related to the respective Windows version.

Added: May 12, 2026, 7:30 PM
Updated: May 12, 2026, 7:30 PM

Vulnerability Rating

Custom Algorithm
spread
8.4
impact
7.5
exploitability
2.9
remediation
7.7
relevance
8.1
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.