CVE-2026-20803

Published: Jan 13, 2026

Modified: Apr 1, 2026

PUBLISHED

CVSS v3.1

7.2

HIGH

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

Vendor	Product	Versions
Microsoft	Microsoft SQL Server 2022 (GDR)	affected `16.0.0 - < 16.0.1165.1`
Microsoft	Microsoft SQL Server 2022 for x64-based Systems (CU 22)	affected `16.0.0.0 - < 16.0.4230.2`
Microsoft	Microsoft SQL Server 2025 for x64-based Systems (GDR)	affected `17.0.1050.2 - < 17.0.1050.2`

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

vendor-advisory

patch

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