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OpenAdvisories
High MSRC-CVE-2026-47294 1 CVE

Microsoft SharePoint Server Remote Code Execution Vulnerability

Published May 29, 2026 · Updated Jun 10, 2026 · Revision 3

Vendor: Microsoft

Summary

Impact: Remote Code Execution. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.

Details

According to the CVSS metric, the attack vector is network (AV:N) and the user interaction is required (UI:R). What is the target context of the remote code execution?
This attack requires a client to connect to a malicious server, and that could allow the attacker to gain code execution on the client.

How could an attacker exploit the vulnerability?
In a network-based attack, an authenticated attacker, as at least a Site Owner, could write arbitrary code to inject and execute code remotely on the SharePoint Server.

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.

Security updates
16.0.5552.1002 — https://support.microsoft.com/help/5002868
16.0.10417.20128 — https://support.microsoft.com/help/5002870
16.0.19725.20280 — https://support.microsoft.com/help/5002863

Vulnerabilities 1

Revision history

  1. #3

    Updated an acknowledgement. This is an informational change only.

  2. #1

    Information published.

  3. #2

    Information published. This CVE was addressed by updates that were released in May 2026, but the CVE was inadvertently omitted from the May 2026 Security Updates. This is an informational change only. Customers who have already installed the May 2026 updates do not need to take any further action.

References