SQL Server Elevation of Privilege Vulnerability

CVE-2026-21262 is a privilege escalation vulnerability in Microsoft SQL Server caused by improper access control. Authenticated attackers could exploit it to gain elevated permissions, potentially reaching the sysadmin role. Microsoft addressed the flaw in the March 2026 security updates. Exploitation could allow modification of database objects, access to sensitive data, or administrative actions beyond intended permissions, posing significant risks to application security and operational continuity.