CVE-2025-29816: Microsoft 365 Apps

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

Improper input validation in Microsoft Office Word allows an unauthorized attacker to bypass a security feature over a network.

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
• Microsoft Word: version 2016 only

Published 2025-04-08. Last modified 2026-06-17.