Microsoft Office Click-To-Run Privilege Escalation Vulnerability

A vulnerability allowing privilege escalation has been identified in Microsoft Office Click-To-Run. This issue arises from insufficient granularity of access control, which enables an authorized attacker to elevate privileges locally. The vulnerability affects multiple Microsoft Office products, including Office LTSC 2024, Office LTSC 2021, Microsoft 365 Apps for Enterprise, and Office 2019, across both 32-bit and 64-bit editions.

Impact

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

Remediation

Users can download the security update for this vulnerability through the Microsoft Update Catalog. For guidance on applying the update, refer to the Microsoft Office Update Knowledge Base articles available for each affected Office version.