CVE-2026-123391 · Vendor
NO FIX YET
Microsoft Office SharePoint has an incorrect authorization check that lets a logged-in user raise their privileges across the network. An attacker who already holds a valid account can gain rights beyond what they were granted.
first public Nov 10, 2026 · 1 source
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Organizations running Microsoft SharePoint on-premises servers where users hold valid accounts. The sources do not state which SharePoint versions or configurations are affected, so teams should confirm against Microsoft's advisory. Organizations using only SharePoint Online may not be affected, but the sources do not confirm this.
Not affected if no-sharepoint, sharepoint-online-only
Who cares microsoft-office, on-premises, sharepoint
Unknown from the sources. In the analyst’s queue.
No fix yet, per the sources.
Incorrect authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
This page as .md · .json · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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