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CVE Number Vulnerability Product Severity Date
CVE-2026-40365 Microsoft SharePoint Server Remote Code Execution Vulnerability Microsoft SharePoint Critical 29-05-2026

Technical Information

An authenticated attacker with at least Site Owner access, could exploit insufficient access control in Microsoft Office SharePoint to inject and execute arbitrary code remotely over the network on the vulnerable SharePoint Server.

Patch release date: May 12, 2026
Further information on this vulnerability is available at : CVE-2026-40365

Affected Software

Microsoft SharePoint Enterprise Server 2016,
Microsoft SharePoint Server 2019,
Microsoft SharePoint Server Subscription Edition