CVE-2026-66816

MEDIUM CVSS 3.1: 6.5 EPSS 1.00%
Updated Sep 16, 2026
Microsoft
Parameter Value
CVSS 6.5 (MEDIUM)
Affected Versions 16.0.4003.1 — 17.0.4085.5
Fixed In 16.0.1200.5
Type CWE-778
Vendor Microsoft
Public PoC No

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

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
None
No data modification
Availability
None
No disruption

CVSS Vector v3.1

Weakness Type (CWE)

Vulnerable Products 4

Configuration From (including) Up to (excluding)
Microsoft Sql_Server_2022
cpe:2.3:a:microsoft:sql_server_2022:*:*:*:*:*:*:x64:*
— 16.0.1200.5
Microsoft Sql_Server_2022
cpe:2.3:a:microsoft:sql_server_2022:*:*:*:*:*:*:x64:*
16.0.4003.1 16.0.4275.2
Microsoft Sql_Server_2025
cpe:2.3:a:microsoft:sql_server_2025:*:*:*:*:*:*:x64:*
— 17.0.1135.8
Microsoft Sql_Server_2025
cpe:2.3:a:microsoft:sql_server_2025:*:*:*:*:*:*:x64:*
17.0.4006.2 17.0.4085.5