Service Vulnerability in Microhard IPn4G Products
CVE-2018-25143

8.7HIGH

Key Information:

Vendor

Microhard Systems

Status
Microhard Systems 3g/4g Cellular Ethernet And Serial Gateway Backdoor Jailbreak
Vendor
CVE Published:
24 December 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2018-25143?

Microhard Systems IPn4G version 1.1.0 features a service vulnerability that permits authenticated users to activate a limited SSH shell using the default 'msshc' user. Through this vulnerability, malicious actors can leverage a specially crafted 'ping' command in the NcFTP environment, which may allow them to escape the restricted shell, thus gaining the ability to execute commands with root privileges. This poses a significant security risk as it compromises the integrity and confidentiality of the system.

Affected Version(s)

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

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2018-25143 - Proof of Concept

References

https://www.exploit-db.com/exploits/45041
exploit
http://www.microhardcorp.com
product
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2018-54...
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

LiquidWorm as Gjoko Krstic of Zero Science Lab
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CVE-2018-25143 : Service Vulnerability in Microhard IPn4G Products