Sep 2026: Microsoft Office SharePoint Remote Code Execution Vulnerability
CVE-2026-69804 Published on September 8, 2026
Microsoft Office SharePoint Remote Code Execution Vulnerability
Time-of-check time-of-use (toctou) race condition in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Weakness Type
What is a TOCTTOU Vulnerability?
The software checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the software to perform invalid actions when the resource is in an unexpected state. This weakness can be security-relevant when an attacker can influence the state of the resource between check and use. This can happen with shared resources such as files, memory, or even variables in multithreaded programs.
CVE-2026-69804 has been classified to as a TOCTTOU vulnerability or weakness.
Products Associated with CVE-2026-69804
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Affected Versions
Microsoft SharePoint Server Subscription Edition:- Version 16.0.0 and below 16.0.20326.20090 is affected.