CVE-2026-26114: Microsoft SharePoint Server

High severity, CVSS 8.8. EPSS: 2.5% 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 Server: version 2016 only; version 2019 only

Published 2026-03-10. Last modified 2026-06-17.