SQL injection in Microsoft SharePoint Server - CVE-2026-70266
Published: October 14, 2026
Vulnerability identifier: #VU154691
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-2026-70266
CWE-ID: CWE-89
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to escalate privileges.
The vulnerability exists due to improper neutralization of special elements used in SQL commands in Microsoft Office SharePoint when processing SQL commands. A remote user can inject special elements into SQL commands to escalate privileges.
The Preview Pane is not an attack vector.
Affected software
Microsoft SharePoint Server
How to mitigate CVE-2026-70266
Install security update from vendor's website.
Microsoft SharePoint Server - update to 16.0.20326.20190