SARA / Free Tools / CVE / CVE-2023-22421

CVE-2023-22421 — Out-of-bounds read vulnerability exists in Kostac PLC Programming Software (Form

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

CVSS
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EPSS
0.10% (top 73.80%)
CWE
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Published
2023-03-05T00:00:00.000Z
Last modified
2025-03-07T18:15:14.304Z
CVSS vector
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01What is this vulnerability?

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.

02Affected products

VendorProductVersions
JTEKT ELECTRONICS CORPORATIONKostac PLC Programming Software (Former name: Koyo PLC Programming Software)Version 1.6.9.0 and earlier

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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