CVE-2026-20803 json
Microsoft SQL Server Elevation of Privilege Vulnerability
published 2026-01-13 9 mo ago modified 2026-07-30 3 mo ago also EUVD-2026-2196
- cvss
- 7.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.2%
- EPSS 1.2% chance of exploitation in 30 days, percentile 69%
- public exploits
- 0
- none known
Summary
Missing authentication for critical function in SQL Server allows an authorized attacker to elevate privileges over a network.
Patch / fix
- Microsoft Microsoft SQL Server 2022 (GDR) 16.0.1165.1
- Microsoft Microsoft SQL Server 2022 for x64-based Systems (CU 22) 16.0.4230.2
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 9 mo ago
Exploit prediction
1.25% chance of exploitation in the next 30 days, higher than 69% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C |
| CNA | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Microsoft Microsoft SQL Server 2022 (GDR)
- Microsoft Microsoft SQL Server 2022 for x64-based Systems (CU 22)
- Microsoft Microsoft SQL Server 2025 for x64-based Systems (GDR)
Classification
- Weakness
-
- CWE-306 Missing Authentication for Critical Functionality
- Technology feeds
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2026-20803
vendor-advisory, patch
Sources
- CVE List CVE-2026-20803
- NVD CVE-2026-20803
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