Stack-based buffer overflow in Microsoft SQL Server - CVE-2026-116936
Published: November 11, 2026
Vulnerability identifier: #VU164999
CSH Severity: Low
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-116936
CWE-ID: CWE-121
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote privileged user to execute arbitrary code in the SQL Server service context.
The vulnerability exists due to a stack-based buffer overflow in Microsoft SQL Server when processing a specially crafted database or backup file. A remote privileged user can use database restore or similar administrative permissions to cause the server to process such a file over the network to execute arbitrary code.
Affected software
Microsoft SQL Server
How to mitigate CVE-2026-116936
Install security update from vendor's website.
Microsoft SQL Server - addressed in versions 14.0.2150.2, 14.0.3570.2, 15.0.2210.4, 15.0.4510.2, 16.0.1220.3, 16.0.4315.2, 17.0.1155.3, 17.0.5045.3