Privilege escalation via relative path traversal
Published Aug 20, 2026 · Updated Aug 25, 2026
Relative path traversal in Microsoft Fabric allows remote authenticated users to elevate privileges over a network. Microsoft has not published the affected Fabric component, traversed path, or incorrect filesystem operation that processes the relative path. A valid Fabric authorization context is required; successful exploitation crosses a security boundary and grants elevated access with confidentiality, integrity, and availability consequences.
Summary
What happened
Relative path traversal in Microsoft Fabric allows remote authenticated users to elevate privileges over a network. Microsoft has not published the affected Fabric component, traversed path, or incorrect filesystem operation that processes the relative path. A valid Fabric authorization context is required; successful exploitation crosses a security boundary and grants elevated access with confidentiality, integrity, and availability consequences.
The record
- CVE
- CVE-2026-63509
- Published
- Aug 20, 2026
- Updated
- Aug 25, 2026
- Vendor
- Microsoft
- Product
- Microsoft Fabric
- Classifications
- CWE-23, T1068
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 20, 2026CVE publishedPublication date reported by the CVE source.
- Aug 25, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
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Technologies
Your stack
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Your stack
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