CVE-2020-28213 Code injection in PLC Simulator on EcoStruxureª Control Expert (now Unity Pro) (all versions)

High 8.8 Published 19 Nov 2020 Updated 4 Aug 2024

Attackers can execute unauthorized commands on the PLC Simulator by sending specially crafted Modbus requests due to missing integrity checks.

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-2020-28213?

CVE-2020-28213 is a high-severity code injection vulnerability in PLC Simulator on EcoStruxureª Control Expert (now Unity Pro) (all versions), published on 19 Nov 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A CWE-494: Download of Code Without Integrity Check vulnerability exists in PLC Simulator on EcoStruxureª Control Expert (now Unity Pro) (all versions) that could cause unauthorized command execution when sending specially crafted requests over Modbus.

Weakness: CWE-494

Which versions are affected by CVE-2020-28213?

It affects 1 product.

Products include Schneider-Electric Ecostruxure Control Expert.

How do I fix CVE-2020-28213?

No fix has been published for CVE-2020-28213 yet. Limit exposure of the affected software until one is available.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2020-28213 being exploited?

There is no known exploitation of CVE-2020-28213 in the wild and no public exploit code.

Sources

Also known as GHSA-45p7-9xjf-9687.