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CVE Number Vulnerability Product Severity Date
CVE-2026-21262 SQL Server Elevation of Privilege Vulnerability Microsoft SQL Server Important 07-04-2026

Technical Information

An authenticated attacker with low-privileged SQL Server credentials could exploit improper access control in SQL Server via network access to bypass authorization checks and escalate privileges to the sysadmin role.

Patch release date: Mar 10, 2026
Further information on this vulnerability is available at : CVE-2026-21262

Affected Software

Microsoft SQL Server 2017 for x64-based Systems (GDR),
Microsoft SQL Server 2019 for x64-based Systems (GDR),
Microsoft SQL Server 2016 for x64-based Systems Service Pack 3 (GDR),
Microsoft SQL Server 2017 for x64-based Systems (CU 31),
Microsoft SQL Server 2016 for x64-based Systems Service Pack 3 Azure Connect Feature Pack,
Microsoft SQL Server 2022 for x64-based Systems (GDR),
Microsoft SQL Server 2025 for x64-based Systems (GDR),
Microsoft SQL Server 2019 for x64-based Systems (CU 32),
Microsoft SQL Server 2022 for x64-based Systems (CU 23),
Microsoft SQL Server 2025 for x64-based Systems (CU2)