What is CVE-2026-26114?

CVE-2026-26114 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-2026-26114 cover?

CVE-2026-26114 covers the following CVE IDs: CVE-2026-26114. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-26114?

CVE-2026-26114 has a CVSS v3 base score of 8.8, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-26114?

CVE-2026-26114 affects 2 products, including: Microsoft SharePoint Enterprise Server 2016; Microsoft SharePoint Server 2019.

CVE-2026-26114HighCVSS 8.8

Microsoft SharePoint Server Remote Code Execution Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

May 31, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-26114 →

📋 Description

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

🎯 Affected products2

Microsoft SharePoint Enterprise Server 2016
Microsoft SharePoint Server 2019

✅ Remediation

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

🔗 References (5)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26114
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