CVE-2023-22424 Use after free in Kostac PLC Programming Software (Former name: Koyo PLC Programming Software)

High 7.8 Published 5 Mar 2023 Updated 7 Mar 2025

Attackers can achieve arbitrary code execution or information disclosure by tricking users into opening a malicious project file in Kostac PLC 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-2023-22424?

CVE-2023-22424 is a high-severity use after free vulnerability in JTEKT ELECTRONICS CORPORATION Kostac PLC Programming Software (Former name: Koyo PLC Programming Software), published on 5 Mar 2023. 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

Use-after-free vulnerability exists in Kostac PLC Programming Software (Former name: Koyo PLC Programming Software) Version 1.6.9.0 and earlier. With the abnormal value given as the maximum number of columns for the PLC program, the process accesses the freed memory. As a result, opening a specially crafted project file may lead to information disclosure and/or arbitrary code execution.

Weakness: CWE-416

Which versions are affected by CVE-2023-22424?

It affects 1 product.

Products include Jtekt Kostac Plc Programming Software.

How do I fix CVE-2023-22424?

No fix has been published for CVE-2023-22424 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2023-22424 being exploited?

There is no known exploitation of CVE-2023-22424 in the wild and no public exploit code.

Sources

Also known as GHSA-82v2-v4p5-fg34.