CVE-2026-67626

Microsoft SQL Server Denial of Service Vulnerability

State: Published
Severity: 6.5 Medium
Published: Oct 13, 2026
Updated: Oct 31, 2026
Reserved: Jul 29, 2026

Description

Uncontrolled resource consumption in SQL Server allows an authorized attacker to deny service over a network.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C	microsoft

Weaknesses

CWE-400 Uncontrolled Resource Consumption

Affected Products

Product	Versions
Microsoft SQL Server 2022 (GDR)Microsoft	16.0.0 to before 16.0.1210.3Affected
Microsoft SQL Server 2022 for x64-based Systems (CU27)Microsoft	16.0.4003.1 to before 16.0.4305.5Affected
Microsoft SQL Server 2025 for x64-based Systems (CU9)Microsoft	17.0.4006.2 to before 17.0.5015.4Affected
Microsoft SQL Server 2025 for x64-based Systems (GDR)Microsoft	17.0.1050.2 to before 17.0.1145.4Affected

References

Microsoft SQL Server Denial of Service Vulnerabilityvendor-advisorypatch

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