Microsoft SQL Server Elevation of Privilege Vulnerability
This high-severity Microsoft Server advisory covers CVE-2026-20803 affecting Microsoft SQL Server 2022 (GDR), Microsoft SQL Server 2022 for x64-based Systems (CU 22), Microsoft SQL Server 2025 for x64-based Systems (GDR).
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Summary
Missing authentication for critical function in SQL Server allows an authorized attacker to elevate privileges over a network.
Affected products named by the advisory: Microsoft SQL Server 2022 (GDR); Microsoft SQL Server 2022 for x64-based Systems (CU 22); Microsoft SQL Server 2025 for x64-based Systems (GDR).
- Microsoft SQL Server 2022 (GDR) 16.0.0 before 16.0.1165.1
- Microsoft SQL Server 2022 for x64-based Systems (CU 22) 16.0.0.0 before 16.0.4230.2
- Microsoft SQL Server 2025 for x64-based Systems (GDR) before 17.0.1050.2
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
- 16.0.1165.1
- 16.0.4230.2
- 17.0.1050.2
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Mitigation
Upgrade to a fixed release: 16.0.1165.1, 16.0.4230.2, 17.0.1050.2. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
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