CVE-2026-20803

CWE-306 — Missing Authentication6 documents5 sources
Severity
7.2HIGH
EPSS
0.1%
top 81.28%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
5
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)+2 more
Timeline
PublishedJan 13

Description

Missing authentication for critical function in SQL Server allows an authorized attacker to elevate privileges over a network.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HExploitability: 1.2 | Impact: 5.9

Affected Packages4 packages

▶CVEListV5microsoft/microsoft_sql_server_2022_(gdr)16.0.0 — 16.0.1165.1
▶NVDmicrosoft/sql16.0.1000.6 — 16.0.1165.1+2

🔴Vulnerability Details

2
CVEList
Microsoft SQL Server Elevation of Privilege Vulnerability↗2026-01-13
▶
GHSA
GHSA-9429-3r47-rwh9: Missing authentication for critical function in SQL Server allows an authorized attacker to elevate privileges over a network↗2026-01-13
▶

📋Vendor Advisories

1
Microsoft
Microsoft SQL Server Elevation of Privilege Vulnerability↗2026-01-13
▶

🕵️Threat Intelligence

1
Wiz
CVE-2026-20803 Impact, Exploitability, and Mitigation Steps | Wiz↗
▶
CVE-2026-20803 (HIGH CVSS 7.2) | Missing authentication for critical | cvebase.io