CVE-2025-47171: Microsoft 365 Apps

Medium severity, CVSS 6.7. EPSS: 1.7% chance of exploitation in the next 30 days.

Improper input validation in Microsoft Office Outlook allows an authorized attacker to execute code locally.

Affected products

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

Published 2025-06-10. Last modified 2026-06-17.