CVE-2018-25146 Microhard Systems IPn4G 1.1.0 Service Control Denial of Service

High 7.1 Published 24 Dec 2025 Updated 2 Feb 2026

Authenticated attackers can exploit an undocumented feature to kill system processes, causing denial of service on Microhard Systems IPn4G gateways.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2018-25146?

CVE-2018-25146 is a high-severity missing authorization vulnerability in Microhard Systems 3G/4G Cellular Ethernet and Serial Gateway Service Control DoS, published on 24 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Microhard Systems IPn4G 1.1.0 contains an undocumented vulnerability that allows authenticated attackers to list and manipulate running system processes. Attackers can send arbitrary signals to kill background processes and system services through a hidden feature, potentially causing service disruption and requiring device restart.

Weakness: CWE-863

Which versions are affected by CVE-2018-25146?

It affects 11 products.

Products include Microhardcorp Bullet-3g Firmware, Microhardcorp Bullet-Lte Firmware, Microhardcorp Bulletplus Firmware, Microhardcorp Dragon-Lte Firmware, Microhardcorp Ipn3gb Firmware, Microhardcorp Ipn3gii Firmware and 5 more.

How do I fix CVE-2018-25146?

No fix has been published for CVE-2018-25146 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2018-25146 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2018-25146 exists.

Sources

Also known as GHSA-9wqg-38fc-34m9.