Memory disclosure and CGI crash via format string
Published Jul 30, 2026 · Updated Jul 30, 2026
Stored format string injection in ASUSTOR ADM allows remote authenticated users to read memory or crash the FTP Backup CGI process. FTP Backup writes user-controlled backup configuration data to a task log, which a CGI process later handles as a format string instead of inert text. Exploitation requires an authenticated network session and affects process memory confidentiality or availability, with no reported data modification.
Summary
What happened
Stored format string injection in ASUSTOR ADM allows remote authenticated users to read memory or crash the FTP Backup CGI process. FTP Backup writes user-controlled backup configuration data to a task log, which a CGI process later handles as a format string instead of inert text. Exploitation requires an authenticated network session and affects process memory confidentiality or availability, with no reported data modification.
The record
- CVE
- CVE-2026-18186
- Published
- Jul 30, 2026
- Updated
- Jul 30, 2026
- Vendor
- ASUSTOR Inc.
- Product
- ASUSTOR Data Master
- Classifications
- CWE-134, T1499
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 30, 2026CVE publishedPublication date reported by the CVE source.
- Jul 30, 2026Record 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=4.1.0 <=4.3.3.RUN1
- Affected versionversion=5.0.0 <=5.1.3.RI81
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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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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