Type confusion in Microsoft SQL Server - CVE-2026-54116
Published: July 17, 2026
Vulnerability identifier: #VU138174
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-54116
CWE-ID: CWE-843
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to gain access to sensitive information.
The vulnerability exists due to a type confusion error. A remote user can send specially crafted request to the SQL server and disclose internal memory pointers.
Affected software
Microsoft SQL Server
How to mitigate CVE-2026-54116
Install security update from vendor's website.
Microsoft SQL Server - addressed in versions 2016 SP3 13.0.7095.1, 2016 SP3 GDR 13.0.6500.1, 2017 GDR 14.0.2120.1, 2017 CU31 14.0.3540.1, 2019 GDR 15.0.2180.2, 2019 CU32 15.0.4480.2, 2022 GDR 16.0.1190.2, 2022 CU25 16.0.4262.2, 2025 GDR 17.0.1125.2, 2025 CU6 + GDR 17.0.4060.2