CVE-2026-66816 MEDIUM

CVE-2026-66816: Microsoft SQL Server Security Feature Bypass Vulnerability

Vendor Microsoft
Product Microsoft SQL Server 2022 (CU 26)
Weakness CWE-778
Published September 8, 2026
Last update September 29, 2026
View on NVD All CVEs

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C

What the vulnerability does

01Description

Insufficient logging in SQL Server allows an authorized attacker to bypass a security feature over a network.

Key dates

02Disclosure timeline

September 8, 2026 CVE published
September 29, 2026 Record updated