CVE-2018-25143 — Microhard Systems IPn4G 1

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 a

01What is this vulnerability?

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.

02Affected products

Vendor	Product	Versions
Microhard Systems	Microhard Systems 3G/4G Cellular Ethernet and Serial Gateway Backdoor Jailbreak	IPn4G 1.1.0 build 1098

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2025-12-24T19:27:48.742Z
• Last modified: 2025-12-24T20:25:48.441Z

09References

• www.exploit-db.com — https://www.exploit-db.com/exploits/45041
• www.microhardcorp.com — http://www.microhardcorp.com
• www.zeroscience.mk — https://www.zeroscience.mk/en/vulnerabilities/ZSL-2018-5486.php