Summary
Impact: Spoofing. Microsoft rating: Important. Not known to be exploited — Exploitation More Likely. Customer action: Required.
Details
I am running SharePoint Server 2016. Do the updates for SharePoint Enterprise Server 2016 also apply to the version I am running?
Yes. The same KB number applies to both SharePoint Server 2016 and SharePoint Enterprise Server 2016. Customers running either version should install the security update to be protected from this vulnerability.
According to the CVSS metric, user interaction is required (UI:R) and privileges required is low (PR:L). What does that mean for this vulnerability?
An authorized attacker must send the user a malicious link and convince the user to open it.
Security updates
16.0.10417.20153 — https://support.microsoft.com/help/5002874
16.0.19725.20384 — https://support.microsoft.com/help/5002873
Vulnerabilities 1
-
High 7.3
Microsoft SharePoint Server Spoofing Vulnerability
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.
Revision history
-
#1
Information published.
References
-
CVE-2026-47634 Microsoft SharePoint Server Spoofing Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47634
-
Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
-
Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
-
Common Vulnerability Scoring System
https://www.first.org/cvss