Denial of Service Vulnerability in Microsoft SQL Server
CVE-2026-88084

5.3MEDIUM

Key Information:

Vendor

Microsoft
Status
Microsoft Sql Server 2019 (gdr)
Microsoft Sql Server 2019 For X64-based Systems (cu32)
Microsoft Sql Server 2025 (cu8)
Vendor
CVE Published:
13 October 2026

What is CVE-2026-88084?

A resource allocation vulnerability in Microsoft SQL Server allows an authorized attacker to exploit the absence of limits or throttling. By leveraging this flaw, the attacker could potentially saturate network resources, resulting in service denials to legitimate users. This vulnerability underscores the necessity for patches and security best practices to safeguard SQL Server installations.

Affected Version(s)

Microsoft SQL Server 2019 (GDR) x64-based Systems 15.0.0 < 15.0.2200.2

Microsoft SQL Server 2019 for x64-based Systems (CU32) x64-based Systems 15.0.4003.23 < 15.0.4500.2

Microsoft SQL Server 2025 (CU8) x64-based Systems -

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.