{"id":"CVE-2021-42707","aliases":["EUVD-2021-29667","GHSA-83cj-78f4-89p2"],"status":"published","title":"WECON PLC Editor","description":"PLC Editor Versions 1.3.8 and prior is vulnerable to an out-of-bounds write while processing project files, which may allow an attacker to execute arbitrary code.","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":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.0097,"percentile":0.62181,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2021-11-22T19:04:29Z","modified":"2026-06-17T04:09:59Z","products":[{"vendor":"we-con","product":"plc_editor"},{"vendor":"wecon","product":"plc editor"}],"references":[{"url":"https://us-cert.cisa.gov/ics/advisories/icsa-21-315-01","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-42707"},{"url":"https://github.com/advisories/GHSA-83cj-78f4-89p2"}],"sources":{"cve":[{"id":"CVE-2021-42707","title":"WECON PLC Editor","description":"PLC Editor Versions 1.3.8 and prior is vulnerable to an out-of-bounds write while processing project files, which may allow an attacker to execute arbitrary code.","status":"published","published":"2021-11-22T19:04:29.693Z","modified":"2024-09-16T20:06:24.09Z","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":"cna"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:32:58.739039Z"}],"euvd":[{"id":"EUVD-2021-29667","description":"PLC Editor Versions 1.3.8 and prior is vulnerable to an out-of-bounds write while processing project files, which may allow an attacker to execute arbitrary code.","status":"published","published":"2021-11-22T19:04:29Z","modified":"2024-09-16T20:06:24Z","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":"2026-11-03T00:55:17.319093Z"}],"ghsa":[{"id":"GHSA-83cj-78f4-89p2","title":"PLC Editor Versions 1.3.8 and prior is vulnerable to an out-of-bounds write while processing...","description":"PLC Editor Versions 1.3.8 and prior is vulnerable to an out-of-bounds write while processing project files, which may allow an attacker to execute arbitrary code.","status":"published","published":"2021-11-23T00:00:50Z","modified":"2024-02-27T23:37:00Z","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-787"],"updated_at":"2026-11-02T14:55:38.39087Z"}],"nvd":[{"id":"CVE-2021-42707","description":"PLC Editor Versions 1.3.8 and prior is vulnerable to an out-of-bounds write while processing project files, which may allow an attacker to execute arbitrary code.","status":"published","published":"2021-11-22T20:15:18.007Z","modified":"2026-06-17T04:09:59.34Z","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":"secondary"},{"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":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:07:01.428028Z"}]}}