CVE-2023-22419 Memory corruption in Kostac PLC Programming Software (Former name: Koyo PLC Programming Software)

High 7.8 Published 5 Mar 2023 Updated 6 Mar 2025

An out-of-bounds read in Kostac PLC software allows attackers to disclose information or execute code via a crafted project file.

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-2023-22419?

CVE-2023-22419 is a high-severity memory corruption 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

Out-of-bounds read vulnerability exists in Kostac PLC Programming Software (Former name: Koyo PLC Programming Software) Version 1.6.9.0 and earlier. When processing a comment block in stage information, the end of data cannot be verified and out-of-bounds read occurs. As a result, opening a specially crafted project file may lead to information disclosure and/or arbitrary code execution.

Weakness: CWE-125

Which versions are affected by CVE-2023-22419?

It affects 1 product.

Products include Jtekt Kostac Plc Programming Software.

How do I fix CVE-2023-22419?

No fix has been published for CVE-2023-22419 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-2023-22419 being exploited?

There is no known exploitation of CVE-2023-22419 in the wild and no public exploit code.

Sources

Also known as GHSA-89hq-79f3-9hjw.