CVE-2025-47166: Microsoft SharePoint Enterprise Server

High severity, CVSS 8.8. EPSS: 21.2% chance of exploitation in the next 30 days.

Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

Affected products

• Microsoft SharePoint Enterprise Server: version 2016 only
• Microsoft SharePoint Server: before 16.0.18526.20396 (fixed in 16.0.18526.20396); version 2019 only

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