Root command execution via unsanitized debug parameter
Published Feb 2, 2026 · Updated Feb 2, 2026
Command injection in EFM Networks ipTIME A8004T 14.18.2 allows remote authenticated users to execute commands as root through the debug interface. The show_debug_screen handler passes the cmd parameter directly to popen and returns command output in the HTTP response. Exploitation requires remote support to be enabled, a non-default administrator password, a valid privileged session, and the hardcoded magic value.
Summary
What happened
Command injection in EFM Networks ipTIME A8004T 14.18.2 allows remote authenticated users to execute commands as root through the debug interface. The show_debug_screen handler passes the cmd parameter directly to popen and returns command output in the HTTP response. Exploitation requires remote support to be enabled, a non-default administrator password, a valid privileged session, and the hardcoded magic value.
The record
- CVE
- CVE-2026-1741
- Published
- Feb 2, 2026
- Updated
- Feb 2, 2026
- Vendor
- EFM Networks
- Product
- ipTIME A8004T
- Classifications
- CWE-912, T1059.004, T1190
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Feb 2, 2026CVE publishedPublication date reported by the CVE source.
- Feb 2, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=14.18.2
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
- A8004T d.cgi exploit chain proof of conceptfunctional · demonstrated
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Technologies
Your stack
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Your stack
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