CVE-2020-5546 Command injection in Mitsubishi Electric MELQIC IU1 series

High 8.8 Published 16 Mar 2020 Updated 4 Aug 2024

An attacker on the same network can execute malware or disrupt network functions in Mitsubishi Electric MELQIC IU1 series devices via crafted packets.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2020-5546?

CVE-2020-5546 is a high-severity command injection vulnerability in Mitsubishi Electric MELQIC IU1 series, published on 16 Mar 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') vulnerability in TCP function included in the firmware of Mitsubishi Electric MELQIC IU1 series IU1-1M20-D firmware version 1.0.7 and earlier allows an attacker on the same network segment to stop the network functions or execute malware via a specially crafted packet.

Weakness: CWE-88

Which versions are affected by CVE-2020-5546?

It affects 1 product.

Products include Mitsubishielectric Iu1-1m20-D Firmware.

How do I fix CVE-2020-5546?

No fix has been published for CVE-2020-5546 yet. Limit exposure of the affected software until one is available.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2020-5546 being exploited?

There is no known exploitation of CVE-2020-5546 in the wild and no public exploit code.

Sources

Also known as GHSA-v938-m8gq-54wh.