Remote Code Execution Vulnerability in Microsoft SQL Server
CVE-2026-65674

8.8HIGH

Key Information:

Vendor

Microsoft
Status
Microsoft Sql Server 2019 (gdr)
Microsoft Sql Server 2019 For X64-based Systems (cu32)
Microsoft Sql Server 2022 (gdr)
Microsoft Sql Server 2022 For X64-based Systems (cu27)
Vendor
CVE Published:
13 October 2026

What is CVE-2026-65674?

A deserialization vulnerability in Microsoft SQL Server can be exploited by authorized attackers to execute arbitrary code over a network. This flaw allows the interception and manipulation of untrusted data, which can result in significant security risks for affected systems. Organizations using impacted versions of SQL Server should review their security posture and apply relevant patches to mitigate the risk.

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 2022 (GDR) x64-based Systems 16.0.0 < 16.0.1210.3

References

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

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.