CVE-2026-67368

Analyzed Analyzed - Analysis Complete

Improper Link Resolution Leading to Privilege Escalation in SQL Server

Publication date: 2026-09-08

Last updated on: 2026-09-15

Assigner: Microsoft Corporation

Description

Improper link resolution before file access ('link following') in SQL Server allows an authorized attacker to elevate privileges over a network.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-09-08

Last Modified

2026-09-15

Generated

2026-09-29

AI Q&A

2026-09-10

EPSS Evaluated

2026-09-27

NVD

CVE-2026-67368

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	sql_server_2022	to 16.0.1200.5 (exc)
microsoft	sql_server_2022	From 16.0.4003.1 (inc) to 16.0.4275.2 (exc)
microsoft	sql_server_2017	to 14.0.2130.4 (exc)
microsoft	sql_server_2017	From 14.0.3006.16 (inc) to 14.0.3550.4 (exc)
microsoft	sql_server_2019	to 15.0.2190.7 (exc)
microsoft	sql_server_2019	From 15.0.4003.23 (inc) to 15.0.4490.9 (exc)
microsoft	sql_server_2025	to 17.0.1135.8 (exc)
microsoft	sql_server_2025	From 17.0.4006.2 (inc) to 17.0.4085.5 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-59	The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

Attack-Flow Graph

Executive Summary

This vulnerability is an improper link resolution issue in SQL Server that allows an authorized attacker to elevate their privileges over a network. It involves exploiting how SQL Server resolves links before accessing files, enabling unauthorized privilege escalation.

Impact Analysis

An attacker could exploit this to gain higher privileges in SQL Server, potentially accessing sensitive data, modifying system configurations, or executing unauthorized commands. This could lead to data breaches or system compromise if the attacker has network access.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, violating compliance requirements under GDPR, HIPAA, or other regulations. Organizations may face legal penalties, reputational damage, and loss of trust due to data exposure or unauthorized modifications.

Mitigation Strategies

Apply the latest security updates from Microsoft for SQL Server as soon as possible to address the improper link resolution vulnerability.

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