Information Disclosure Vulnerability in Microsoft SQL Server
CVE-2026-118103

6.5MEDIUM

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:; 10 November 2026

What is CVE-2026-118103?

An out-of-bounds read vulnerability in Microsoft SQL Server permits an unauthorized attacker to exploit the system, potentially leading to the unauthorized disclosure of sensitive information over a network. This flaw exposes critical data, making it vital for organizations to apply necessary patches and mitigations to safeguard their systems.

Affected Version(s)

Microsoft SQL Server 2017 (GDR) x64-based Systems 14.0.0 < 14.0.2150.2

Microsoft SQL Server 2017 for x64-based Systems (CU31) x64-based Systems 14.0.3006.16 < 14.0.3570.2

Microsoft SQL Server 2019 (GDR) x64-based Systems 15.0.0 < 15.0.2210.4

References

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

vendor-advisorypatch

CVSS V3.1

Score:

6.5

Severity:

MEDIUM

Confidentiality:

High

Integrity:

None

Availability:

High

Attack Vector:

Network

Attack Complexity:

Low

Privileges Required:

None

User Interaction:

Required

Scope:

Unchanged

Download the Critical Vulnerability Management Cheat Sheet

Timeline

Vulnerability published
Nov 10, 2026
Vulnerability Reserved
Oct 27, 2026

CVE-2026-118103 Data

JSON