CVE-2026-66816
Microsoft SQL Server Security Feature Bypass Vulnerability
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
Insufficient logging in SQL Server allows an authorized attacker to bypass a security feature over a network.
| Vendor | microsoft |
| Product | microsoft sql server 2022 (cu 26) |
| Ecosystems | |
| Industries | TechnologyEnterprise |
| Published | Sep 8, 2026 |
| Last Updated | Sep 15, 2026 |
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CVSS v3 Breakdown
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 Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Microsoft / Microsoft SQL Server 2022 (CU 26)
16.0.0.0 < 16.0.4275.2
Microsoft / Microsoft SQL Server 2022 (GDR)
16.0.0 < 16.0.1200.5
Microsoft / Microsoft SQL Server 2025 (CU8)
17.0.0.0 < 17.0.4085.5
Microsoft / Microsoft SQL Server 2025 for x64-based Systems (GDR)
17.0.1050.2 < 17.0.1135.8