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High · 8.8 CVE-2018-25143 EUVD-2025-205326GHSA-x8gg-ghxq-c254

Microhard Systems IPn4G 1.1.0 Backdoor Jailbreak via Microhard Sh Service

Published Dec 24, 2025 · Updated Dec 24, 2025 · Assigned by VulnCheck

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.

Affected products

VendorProductAffectedFixed
Microhard Systems Microhard Systems 3G/4G Cellular Ethernet and Serial Gateway Backdoor Jailbreak IPn4G 1.1.0 build 1098 —

References