CVE-2023-22424

Name: CVE-2023-22424
Creator: NVD / NIST
Published: 2023-03-06T00:15:10.64+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.31%

Last modified Jun 17, 2026

CVE-2023-22424 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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. EPSS estimates a 0.31% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

0.31%

22.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Jtekt	Kostac Plc Programming Software	<= 1.6.9.0

References

https://jvn.jp/en/vu/JVNVU94966432/Third Party Advisory
https://www.electronics.jtekt.co.jp/en/topics/202303035258/Vendor Advisory
https://www.electronics.jtekt.co.jp/jp/topics/2023030313639/Vendor Advisory
https://jvn.jp/en/vu/JVNVU94966432/Third Party Advisory
https://www.electronics.jtekt.co.jp/en/topics/202303035258/Vendor Advisory
https://www.electronics.jtekt.co.jp/jp/topics/2023030313639/Vendor Advisory

Timeline

Published: Mar 6, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-22424?

How severe is CVE-2023-22424?

CVE-2023-22424 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.31% probability of exploitation in the next 30 days.

How do I fix CVE-2023-22424?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-22424?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST