Authenticated file disclosure via memory-card symlink traversal
Published Jan 7, 2025 · Updated Nov 3, 2025
Path traversal in ABB AC500 V3 firmware before 3.8.0 allows physically proximate attackers to read system files via a crafted memory card. The file explorer follows an ext4 symlink targeting the filesystem root from an inserted card instead of confining access to the card. Physical access and successful device authentication are required, and exposure is limited to files readable as the system user.
Summary
What happened
Path traversal in ABB AC500 V3 firmware before 3.8.0 allows physically proximate attackers to read system files via a crafted memory card. The file explorer follows an ext4 symlink targeting the filesystem root from an inserted card instead of confining access to the card. Physical access and successful device authentication are required, and exposure is limited to files readable as the system user.
The record
- CVE
- CVE-2024-12429
- Published
- Jan 7, 2025
- Updated
- Nov 3, 2025
- Vendor
- GENEREX SYSTEMS Computervertriebsgesellschaft mbH
- Product
- AC500 V3
- Classifications
- CWE-22, T1005
- Attack vector
- physical
- Privileges
- authenticated
Timeline
How it unfolded
- Jan 7, 2025CVE publishedPublication date reported by the CVE source.
- Nov 3, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <3.8.0
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- AC500v3 symlink exploit proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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