CVE-2025-47994: Microsoft 365 Apps

High severity, CVSS 8.6. EPSS: 3.3% chance of exploitation in the next 30 days.

Deserialization of untrusted data in Microsoft Office allows an unauthorized attacker to elevate privileges locally.

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 SharePoint Enterprise Server: version 2016 only

Published 2025-07-08. Last modified 2026-06-17.