All vulnerabilities
CVE-2026-67626

Microsoft SQL Server Denial of Service Vulnerability

Microsoft Microsoft SQL Server 2022 (GDR)Databases
Open in ThreatlineRecord JSON
CVSS
6.5Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.59%Chance of exploitation activity in the next 30 days, higher than 47% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in16.0.1210.3Also 16.0.4305.5, 17.0.5015.4 and 1 moreCVE List
Published13 Oct 2026Updated 23 Oct 2026CVE List

What fixes it

  • 16.0.1210.3Microsoft SQL Server 2022 (GDR)CVE List
  • 16.0.4305.5Microsoft SQL Server 2022 for x64-based Systems (CU27)CVE List
  • 17.0.5015.4Microsoft SQL Server 2025 for x64-based Systems (CU9)CVE List
  • 17.0.1145.4Microsoft SQL Server 2025 for x64-based Systems (GDR)CVE List

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Vendor and government advisories 1

Vendors that say their products are affected, and agencies that issued alerts. Check each for the fixed release of the product you run.

Reports 1

1 outlet mention it. Reports are not confirmation; each links to its source.

Description

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

Text from CVE List

Affected versions 4

  • Microsoft SQL Server 2022 (GDR)affected: 16.0.0 before 16.0.1210.3CVE List
  • Microsoft SQL Server 2022 for x64-based Systems (CU27)affected: 16.0.4003.1 before 16.0.4305.5CVE List
  • Microsoft SQL Server 2025 for x64-based Systems (CU9)affected: 17.0.4006.2 before 17.0.5015.4CVE List
  • Microsoft SQL Server 2025 for x64-based Systems (GDR)affected: 17.0.1050.2 before 17.0.1145.4CVE List

References 1