Authenticated file write via unvalidated unmount path
Published Feb 13, 2025 · Updated Sep 16, 2025
Path traversal in Synology Active Backup for Business allows remote authenticated users to write specific files during encrypted-share unmounting. The unmount function accepts an externally controlled file name or path without adequately restricting it to the intended directory. Low-privileged authenticated network access is sufficient; Synology has not disclosed the writable paths, accepted input, or file contents.
Summary
What happened
Path traversal in Synology Active Backup for Business allows remote authenticated users to write specific files during encrypted-share unmounting. The unmount function accepts an externally controlled file name or path without adequately restricting it to the intended directory. Low-privileged authenticated network access is sufficient; Synology has not disclosed the writable paths, accepted input, or file contents.
The record
- CVE
- CVE-2024-47265
- Published
- Feb 13, 2025
- Updated
- Sep 16, 2025
- Vendor
- Synology
- Product
- Active Backup for Business
- Classifications
- CWE-73, T1565.001
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Feb 13, 2025CVE publishedPublication date reported by the CVE source.
- Sep 16, 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?
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- Affected versionversion=* <2.7.1-13234
- Affected versionversion=* <2.7.1-23234
- Affected versionversion=* <2.7.1-3234
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What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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