CVE-2026-20803 HIGH

CVE-2026-20803: Microsoft SQL Server Elevation of Privilege Vulnerability

Vendor Microsoft
Product Microsoft SQL Server 2022 (GDR)
Weakness CWE-306 · Missing auth
Published January 13, 2026
Last update April 1, 2026
View on NVD All CVEs

CVSS base score

7.2/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Confidentiality High
Integrity High

CVSS 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

What the vulnerability does

01Description

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

Key dates

02Disclosure timeline

January 13, 2026 CVE published
April 1, 2026 Record updated