Improper access control in Microsoft SharePoint Server - CVE-2026-69273
Published: September 8, 2026
Vulnerability identifier: #VU147547
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-2026-69273
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to execute arbitrary code.
The vulnerability exists due to improper access control in vulnerable SharePoint APIs when processing specially formatted unsafe data input. A remote user can send specially formatted input to a susceptible API to execute arbitrary code.
Affected software
Microsoft SharePoint Server
How to mitigate CVE-2026-69273
Install security update from vendor's website.
Microsoft SharePoint Server - update to 16.0.20326.20082