Aug 2026: Microsoft SharePoint Server Elevation of Privilege Vulnerability
CVE-2026-64921 Published on August 11, 2026
Microsoft SharePoint Server Elevation of Privilege Vulnerability
Missing authentication for critical function in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
Weakness Type
Missing Authentication for Critical Function
The software does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.
Products Associated with CVE-2026-64921
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Affected Versions
Microsoft SharePoint Enterprise Server 2016:- Version 16.0.0 and below 16.0.5565.1001 is affected.
- Version 16.0.0 and below 16.0.10417.20198 is affected.
- Version 16.0.0 and below 16.0.19725.20522 is affected.