CVE-2026-20803: Microsoft SQL Server Elevation of Privilege Vulnerability
This Microsoft advisory covers CVE-2026-20803 in Microsoft SQL Server 2022 (GDR), Microsoft SQL Server 2022 for x64-based Systems (CU 22) and Microsoft SQL Server 2025 for x64-based Systems (GDR).
- CVE-2026-20803
Key facts
- Vendor rating
- High, CVSS 7.2
- CISA KEV
- Not listed (catalogue checked )
- Affected
- 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
- Fixed in
- 16.0.1165.1, 16.0.4230.2, 17.0.1050.2
- Source published
- Source revised
- Listed by VulniPulse
Compiled by VulniPulse from the linked sources. How records are collected and checked.
Affected products & platforms
Description
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).
Text from the source record.
- 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 ·verify at source
How to fix CVE-2026-20803
Upgrade to a fixed release named by Microsoft:
- 16.0.1165.1
- 16.0.4230.2
- 17.0.1050.2
Support dates for the fixed release lines
- Microsoft SQL Server 16.0: support ends
- Microsoft SQL Server 17.0: support ends
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