Stack-based buffer overflow in Microsoft SQL Server - CVE-2026-67379
Published: September 9, 2026
Vulnerability identifier: #VU148373
CSH Severity: Medium
CVSS v4: 7.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-67379
CWE-ID: CWE-121
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 a stack-based buffer overflow in SQL Server when processing a specially crafted query or request over a network. A remote user can submit a specially crafted query or request to execute arbitrary code.
Specific protocol settings or configurations must be in place for exploitation to succeed.
Affected software
Microsoft SQL Server
How to mitigate CVE-2026-67379
Install security update from vendor's website.
Microsoft SQL Server - addressed in versions 15.0.2190.7, 15.0.4490.9, 16.0.1200.5, 16.0.4275.2, 17.0.1135.8, 17.0.4085.5