SB2026090939 - Privilege escalation in Microsoft SQL Server
Published: September 9, 2026
Security Bulletin ID
SB2026090939
CSH Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
CWE-ID: CWE-74 - Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CVSSv4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to escalate privileges on the system.
The vulnerability exists due to improper neutralization of special elements in output used by a downstream component in SQL Server. A remote attacker can trick a victim to submit specially crafted instructions to SQL Copilot in SQL Server Management Studio and gain elevated privileges on the target system.
Remediation
Install update from vendor's website.