CVE-2026-63516: Microsoft SharePoint Server

Medium severity, CVSS 6.5. EPSS: 1.9% chance of exploitation in the next 30 days.

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

Affected products

• Microsoft SharePoint Server: before 16.0.19725.20522 (fixed in 16.0.19725.20522); version 2016 only; version 2019 only

Published 2026-08-11. Last modified 2026-08-12.