CVE-2023-22421

7.8 highEPSS 0.3%

High (7.8) in jtekt kostac plc programming software. EPSS 0.3% chance of exploitation in the next 30 days.

Out-of-bounds read vulnerability exists in Kostac PLC Programming Software (Former name: Koyo PLC Programming Software) Version 1.6.9.0 and earlier. The insufficient buffer size for the PLC program instructions leads to out-of-bounds read. As a result, opening a specially crafted project file may lead to information disclosure and/or arbitrary code execution.

Severity

CVSS 3.1

7.8 high

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

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 24% of CVEs (scores of 2026-10-31)
CWE: CWE-125
Published: 2023-03-06
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

jtekt:kostac_plc_programming_software

References

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

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