CVE-2020-16934: Microsoft 365 Apps

High severity, CVSS 7.0. EPSS: 2.7% chance of exploitation in the next 30 days.

<p>An elevation of privilege vulnerability exists in the way that Microsoft Office Click-to-Run (C2R) AppVLP handles certain files. An attacker who successfully exploited the vulnerability could elevate privileges.</p> <p>To exploit this vulnerability, an attacker would need to convince a user to open a specially crafted file.</p> <p>The security update addresses the vulnerability by correcting how Microsoft Office Click-to-Run (C2R) components handle these files.</p>

Affected products

• Microsoft 365 Apps: affected versions not specified
• Microsoft Office: version 2019 only
• Microsoft Office 2013 Click-To-Run: affected versions not specified

Published 2020-10-16. Last modified 2026-06-17.