Unrated severityNVD Advisory· Published Dec 24, 2025· Updated Dec 24, 2025
Microhard Systems IPn4G 1.1.0 Backdoor Jailbreak via Microhard Sh Service
CVE-2018-25143
Description
Microhard Systems IPn4G 1.1.0 contains a service vulnerability that allows authenticated users to enable a restricted SSH shell with a default 'msshc' user. Attackers can exploit a custom 'ping' command in the NcFTP environment to escape the restricted shell and execute commands with root privileges.
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Affected products
2- Range: = 1.1.0
- Microhard Systems/Microhard Systems 3g/4g Cellular Ethernet And Serial Gateway Remote Root Exploitcpe-rescueRange: IPn4G 1.1.0 build 1098
Patches
Vulnerability mechanics
References
3- www.exploit-db.com/exploits/45041mitreexploit
- www.zeroscience.mk/en/vulnerabilities/ZSL-2018-5486.phpmitrethird-party-advisory
- www.microhardcorp.commitreproduct
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