Microsoft Security Response CenterCVE-2026-35439

Microsoft SharePoint Server Remote Code Execution Vulnerability

HighVendor CVSS 8.8 / 10 1 CVE Published May 12, 2026 at 7:00 AM UTC

Summary

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

Install KB5002868. Install KB5002870. Install KB5002863.

May 12, 2026 at 7:00 AM UTC
Published by Microsoft Security Response Center
The publication date reported by the vendor.
Sep 27, 2026 at 11:11 PM UTC
Added to SecurityAlert
We collected the advisory from the official source.
Nov 7, 2026 at 7:05 AM UTC
Confirmed at the source
Our collector saw this advisory during a later source check.

Details collected from Microsoft Security Response Center.

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