What is CVE-2026-47634?

CVE-2026-47634 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Microsoft SharePoint Server Spoofing Vulnerability

Which CVE IDs does CVE-2026-47634 cover?

CVE-2026-47634 covers the following CVE IDs: CVE-2026-47634. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-47634?

CVE-2026-47634 has a CVSS v3 base score of 7.3, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-47634?

CVE-2026-47634 affects 2 products, including: Microsoft SharePoint Server 2019; Microsoft SharePoint Server Subscription Edition.

CVE-2026-47634HighCVSS 7.3

Microsoft SharePoint Server Spoofing Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

June 10, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-47634 →

📋 Description

Improper neutralization of special elements in output used by a downstream component ('injection') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.

🎯 Affected products2

Microsoft SharePoint Server 2019
Microsoft SharePoint Server Subscription Edition

✅ Remediation

KB5002874 (Security Update) — fixed build 16.0.10417.20153 KB5002873 (Security Update) — fixed build 16.0.19725.20384

🔗 References (5)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47634
patchhttps://www.microsoft.com/en-us/download/details.aspx?id=108694
referencehttps://support.microsoft.com/help/5002874
patchhttps://www.microsoft.com/en-us/download/details.aspx?id=108692
referencehttps://support.microsoft.com/help/5002873