SB2026071710 - Multiple vulnerabilities in Microsoft SQL Server

Description

This security bulletin contains information about 2 vulnerabilities.

1) Type confusion (CVE-ID: CVE-2026-54116)

CWE-ID: CWE-843 - Type confusion

CVSSv4: 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/E:U/U:Green

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.

2) SQL injection (CVE-ID: CVE-2026-47296)

CWE-ID: CWE-89 - Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to insufficient sanitization of user-supplied data. A local user can execute arbitrary SQL queries in context of SQL Server instance and escalate privileges on the system.

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2026-54116
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2026-47296