CVE-2016-9367 Denial of service in Moxa NPort

High 7.5 Published 13 Feb 2017 Updated 2 Jun 2026

Attackers can cause denial of service on Moxa NPort devices by requesting excessive resources, leading to resource exhaustion.

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

What is CVE-2016-9367?

CVE-2016-9367 is a high-severity denial of service vulnerability in Moxa NPort, published on 13 Feb 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered in Moxa NPort 5110 versions prior to 2.6, NPort 5130/5150 Series versions prior to 3.6, NPort 5200 Series versions prior to 2.8, NPort 5400 Series versions prior to 3.11, NPort 5600 Series versions prior to 3.7, NPort 5100A Series & NPort P5150A versions prior to 1.3, NPort 5200A Series versions prior to 1.3, NPort 5150AI-M12 Series versions prior to 1.2, NPort 5250AI-M12 Series versions prior to 1.2, NPort 5450AI-M12 Series versions prior to 1.2, NPort 5600-8-DT Series versions prior to 2.4, NPort 5600-8-DTL Series versions prior to 2.4, NPort 6x50 Series versions prior to 1.13.11, NPort IA5450A versions prior to v1.4. The amount of resources requested by a malicious actor is not restricted, leading to a denial-of-service caused by resource exhaustion.

Weakness: CWE-400

Which versions are affected by CVE-2016-9367?

It affects 10 products.

Products include Moxa Nport 5100 Series Firmware, Moxa Nport 5100a Series Firmware, Moxa Nport 5200 Series Firmware, Moxa Nport 5200a Series Firmware, Moxa Nport 5400 Series Firmware, Moxa Nport 5600-8-Dtl Series Firmware and 4 more.

How do I fix CVE-2016-9367?

No fix has been published for CVE-2016-9367 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2016-9367 being exploited?

There is no known exploitation of CVE-2016-9367 in the wild and no public exploit code.

Sources

Also known as GHSA-jqp8-2gqc-3mch.