What is CVE-2026-26106?

CVE-2026-26106 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Microsoft SharePoint Server Remote Code Execution Vulnerability

Which CVE IDs does CVE-2026-26106 cover?

CVE-2026-26106 covers the following CVE IDs: CVE-2026-26106. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-26106?

CVE-2026-26106 has a CVSS v3 base score of 8.8, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-26106?

CVE-2026-26106 affects 3 products, including: Microsoft SharePoint Enterprise Server 2016; Microsoft SharePoint Server 2019; Microsoft SharePoint Server Subscription Edition.

CVE-2026-26106HighCVSS 8.8

Microsoft SharePoint Server Remote Code Execution Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

May 31, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-26106 →

📋 Description

Improper input validation in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

🎯 Affected products3

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

✅ Remediation

KB5002850 (Security Update) — fixed build 16.0.5543.1000 KB5002845 (Security Update) — fixed build 16.0.10417.20102 KB5002843 (Security Update) — fixed build 16.0.19725.20076

🔗 References (7)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26106
patchhttps://www.microsoft.com/en-us/download/details.aspx?id=108572
referencehttps://support.microsoft.com/help/5002850
patchhttps://www.microsoft.com/en-us/download/details.aspx?id=108579
referencehttps://support.microsoft.com/help/5002845
patchhttps://www.microsoft.com/en-us/download/details.aspx?id=108570
referencehttps://support.microsoft.com/help/5002843