Incorrect authorization in Microsoft SharePoint Server - CVE-2026-70246
Published: October 14, 2026
Vulnerability identifier: #VU154673
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-70246
CWE-ID: CWE-863
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to gain SYSTEM privileges.
The vulnerability exists due to incorrect authorization in Microsoft SharePoint Server when accessing the server over a network. A remote user can execute code remotely on the SharePoint server to gain SYSTEM privileges.
Exploitation requires access to the domain.
Affected software
Microsoft SharePoint Server
How to mitigate CVE-2026-70246
Install security update from vendor's website.
Microsoft SharePoint Server - update to 16.0.20326.20190