CVE-2020-27257 Omron CX-One

High 7.8 Published 9 Feb 2021 Updated 17 Sep 2024

Local attackers can execute arbitrary code via type confusion in Omron CX-One industrial control software.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2020-27257?

CVE-2020-27257 is a high-severity memory corruption vulnerability in Omron CX-One, published on 9 Feb 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

This vulnerability allows local attackers to execute arbitrary code due to the lack of proper validation of user-supplied data, which can result in a type-confusion condition in the Omron CX-One Version 4.60 and prior devices.

Weakness: CWE-843

Which versions are affected by CVE-2020-27257?

It affects 4 products.

Products include Omron Cx-One, Omron Cx-Position, Omron Cx-Protocol, Omron Cx-Server.

How do I fix CVE-2020-27257?

No fix has been published for CVE-2020-27257 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2020-27257 being exploited?

There is no known exploitation of CVE-2020-27257 in the wild and no public exploit code.

Sources

Also known as GHSA-j58q-jg6x-x4h9.