CVE-2026-66816

Published: Sep 8, 2026Modified: Sep 16, 2026

6.5

Vector

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

Exploitability: 2.8 / Impact: 3.6

Source: secure@microsoft.com (Secondary)

Description

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

Affected (4)

Products: Microsoft: Sql Server 2022, Sql Server 2025

2 products

Sql Server 2022

Sql Server 2025

Configuration A

4 vulnerable

Vulnerable Software	Affected Versions
Microsoft Sql Server 2022	version < 16.0.1200.5
Microsoft Sql Server 2022	16.0.4003.1 ≤ version < 16.0.4275.2
Microsoft Sql Server 2025	version < 17.0.1135.8
Microsoft Sql Server 2025	17.0.4006.2 ≤ version < 17.0.4085.5

Related CWEs

Insufficient Logging

When a security-critical event occurs, the product either does not record the event or omits important details about the event when logging it.

References (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66816

Source: secure@microsoft.com

Vendor AdvisoryPatch

Timeline

No history available yet.