CVE-2026-63509

Received Received - Intake

Relative Path Traversal in Microsoft Fabric

Publication date: 2026-08-20

Last updated on: 2026-08-20

Assigner: Microsoft Corporation

Description

Relative path traversal in Microsoft Fabric allows an authorized attacker to elevate privileges over a network.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-08-20

Last Modified

2026-08-20

Generated

2026-08-21

AI Q&A

2026-08-21

EPSS Evaluated

N/A

NVD

CVE-2026-63509

EUVD

EUVD-2026-63620

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	fabric	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-23	The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize sequences such as ".." that can resolve to a location that is outside of that directory.

Attack-Flow Graph

Executive Summary

This vulnerability is a relative path traversal in Microsoft Fabric that allows an authorized attacker to elevate privileges over a network. It enables unauthorized access to sensitive data or system functions by manipulating file paths.

Impact Analysis

An attacker could exploit this to gain higher privileges, potentially accessing confidential data, modifying system settings, or disrupting services. This could lead to data breaches, unauthorized actions, or system compromise.

Compliance Impact

This vulnerability could lead to unauthorized data access or exposure, violating GDPR (data protection) and HIPAA (health data privacy). Non-compliance may result in legal penalties, fines, or reputational damage.

Mitigation Strategies

Apply the latest security updates from Microsoft Fabric immediately. Restrict network access to Fabric services and monitor for unauthorized privilege escalation attempts.

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