CVE-2025-21346: Microsoft 365 Apps

High severity, CVSS 7.8. EPSS: 0.7% chance of exploitation in the next 30 days.

Microsoft Office Security Feature Bypass Vulnerability

Affected products

• Microsoft 365 Apps: affected versions not specified
• Microsoft Office: version 2016 only; version 2019 only
• Microsoft Office Long Term Servicing Channel: version 2021 only; version 2024 only

Published 2025-01-14. Last modified 2026-06-17.