{"id":"CVE-2023-22424","aliases":["EUVD-2023-26587","GHSA-82v2-v4p5-fg34"],"status":"published","title":"Use-after-free vulnerability exists in Kostac PLC Programming Software (Former name: Koyo PLC...","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.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00309,"percentile":0.24059,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-416"],"published":"2023-03-05T00:00:00Z","modified":"2026-06-17T05:35:25Z","products":[{"vendor":"jtekt","product":"kostac_plc_programming_software"},{"vendor":"jtekt electronics corporation","product":"kostac plc programming software (former name: koyo plc programming software)"}],"references":[{"url":"https://www.electronics.jtekt.co.jp/en/topics/202303035258/","tags":["x_transferred","Vendor Advisory"]},{"url":"https://www.electronics.jtekt.co.jp/jp/topics/2023030313639/","tags":["x_transferred","Vendor Advisory"]},{"url":"https://jvn.jp/en/vu/JVNVU94966432/","tags":["x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-22424"},{"url":"https://jvn.jp/en/vu/JVNVU94966432"},{"url":"https://www.electronics.jtekt.co.jp/en/topics/202303035258"},{"url":"https://www.electronics.jtekt.co.jp/jp/topics/2023030313639"},{"url":"https://github.com/advisories/GHSA-82v2-v4p5-fg34"}],"sources":{"cve":[{"id":"CVE-2023-22424","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.","status":"published","published":"2023-03-05T00:00:00Z","modified":"2025-03-07T15:48:36.711Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:35:16.126506Z"}],"euvd":[{"id":"EUVD-2023-26587","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.","status":"published","published":"2023-03-05T00:00:00Z","modified":"2025-03-07T15:48:36Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T20:53:10.661676Z"}],"ghsa":[{"id":"GHSA-82v2-v4p5-fg34","title":"Use-after-free vulnerability exists in Kostac PLC Programming Software (Former name: Koyo PLC...","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.","status":"published","published":"2023-03-06T00:30:16Z","modified":"2025-03-07T18:31:59Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T15:00:11.427911Z"}],"nvd":[{"id":"CVE-2023-22424","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.","status":"published","published":"2023-03-06T00:15:10.64Z","modified":"2026-06-17T05:35:25.31Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:07:48.342507Z"}]}}