CVE-2026-88084
Microsoft SQL Server Denial of Service Vulnerability
Microsoft Microsoft SQL Server 2019 (GDR)Databases
CVSS
5.3MediumExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.45%Chance of exploitation activity in the next 30 days, higher than 38% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
- 15.0.2200.2Microsoft SQL Server 2019 (GDR)CVE List
- 15.0.4500.2Microsoft SQL Server 2019 for x64-based Systems (CU32)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
Allocation of resources without limits or throttling in SQL Server allows an authorized attacker to deny service over a network.
Text from CVE List
Affected versions 3
- Microsoft SQL Server 2019 (GDR)affected: 15.0.0 before 15.0.2200.2CVE List
- Microsoft SQL Server 2019 for x64-based Systems (CU32)affected: 15.0.4003.23 before 15.0.4500.2CVE List
- Microsoft SQL Server 2025 (CU8)affected: -CVE List