Stack-based Buffer Overflow in SQL Server by Microsoft
CVE-2026-96956

8HIGH

Key Information:

Vendor

Microsoft
Status
Microsoft Sql Server 2017 (gdr)
Microsoft Sql Server 2017 For X64-based Systems (cu31)
Microsoft Sql Server 2019 (gdr)
Microsoft Sql Server 2019 For X64-based Systems (cu32)
Vendor
CVE Published:
13 October 2026

What is CVE-2026-96956?

A stack-based buffer overflow vulnerability exists in Microsoft SQL Server, allowing authorized attackers to exploit this weakness over a network. By leveraging this issue, attackers can potentially elevate their privileges and gain more control over the database systems. It is crucial for users and administrators to apply the latest updates and patches to mitigate the risks associated with this vulnerability.

Affected Version(s)

Microsoft SQL Server 2017 (GDR) x64-based Systems 14.0.0 < 14.0.2140.2

Microsoft SQL Server 2017 for x64-based Systems (CU31) x64-based Systems 14.0.3006.16 < 14.0.3560.2

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

References

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

CVSS V3.1

Score:
8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
High
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.