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CVE-2018-25143

Microhard Systems IPn4G 1.1.0 Backdoor Jailbreak via Microhard Sh Service

Published: Dec 24, 2025Updated: Jan 26, 2026 Sources: CVE List NVDCWE-78
NVD MITRE
8.8CVSSHIGH
EPSS Score
0.5%
Top 60.3%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
No Fix Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-78

Affected Products

Microhard Systems 3G/4G Cellular Ethernet and Serial Gateway Backdoor JailbreakMicrohard Systems
Embedded
Hardware Firmware / network-adapter
ipn4g firmwaremicrohardcorp
Embedded
Networking Infrastructure / router-switch
ipn3gb firmwaremicrohardcorp
Embedded
Networking Infrastructure / router-switch
ipn4gb firmwaremicrohardcorp
Embedded
Networking Infrastructure / router-switch
bullet-3g firmwaremicrohardcorp
Embedded
Networking Infrastructure / router-switch
microhard systemscommercialHardware Firmware
microhardcorpcommercialCANetworking Infrastructureaka bullet-lte firmware, bullet-3g firmware, bulletlte-na2 firmware
and 7 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

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Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details

MITRE ATT&CK

1 technique
Execution
View detailed technique mapping

References

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

Timeline

Published
Dec 24, 2025
Last Updated
Jan 26, 2026

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