Arbitrary file write via import path traversal
Published Dec 15, 2025 · Updated Dec 15, 2025
Path traversal in Municorn FAX App 3.27.0 for Android allows local users to write arbitrary files into the app's internal storage. MainActivity's file-import flow accepts a ContentProvider-controlled _display_name as an output pathname without neutralizing ../ segments. A malicious Android app can trigger the exposed activity after a local user opens it, write into internal storage, and exhaust resources until the fax service stops operating.
Summary
What happened
Path traversal in Municorn FAX App 3.27.0 for Android allows local users to write arbitrary files into the app's internal storage. MainActivity's file-import flow accepts a ContentProvider-controlled _display_name as an output pathname without neutralizing ../ segments. A malicious Android app can trigger the exposed activity after a local user opens it, write into internal storage, and exhaust resources until the fax service stops operating.
The record
- CVE
- CVE-2025-14699
- Published
- Dec 15, 2025
- Updated
- Dec 15, 2025
- Vendor
- Municorn Limited
- Product
- FAX App
- Classifications
- CWE-22
- Attack vector
- local
- Privileges
- Unavailable
Timeline
How it unfolded
- Dec 15, 2025CVE publishedPublication date reported by the CVE source.
- Dec 15, 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=3.27.0
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
- MainActivity path-traversal proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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