{"id":"CVE-2021-42705","aliases":["EUVD-2021-29665","GHSA-2rh6-6g57-x8rx"],"status":"published","title":"WECON PLC Editor","description":"PLC Editor Versions 1.3.8 and prior is vulnerable to a stack-based buffer overflow 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":"2026-11-12","score":0.01036,"percentile":0.64356,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-121"],"published":"2021-11-22T19:06:36Z","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-2021-42705"},{"url":"https://github.com/advisories/GHSA-2rh6-6g57-x8rx"}],"sources":{"cve":[{"id":"CVE-2021-42705","title":"WECON PLC Editor","description":"PLC Editor Versions 1.3.8 and prior is vulnerable to a stack-based buffer overflow while processing project files, which may allow an attacker to execute arbitrary code.","status":"published","published":"2021-11-22T19:06:36.383Z","modified":"2024-09-16T20:01:34.731Z","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-121"],"updated_at":"2026-11-02T14:32:58.739039Z"}],"euvd":[{"id":"EUVD-2021-29665","description":"PLC Editor Versions 1.3.8 and prior is vulnerable to a stack-based buffer overflow while processing project files, which may allow an attacker to execute arbitrary code.","status":"published","published":"2021-11-22T19:06:36Z","modified":"2024-09-16T20:01:34Z","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"}],"updated_at":"2026-11-03T00:55:18.167658Z"}],"ghsa":[{"id":"GHSA-2rh6-6g57-x8rx","title":"PLC Editor Versions 1.3.8 and prior is vulnerable to a stack-based buffer overflow while...","description":"PLC Editor Versions 1.3.8 and prior is vulnerable to a stack-based buffer overflow while processing project files, which may allow an attacker to execute arbitrary code.","status":"published","published":"2022-05-24T19:21:10Z","modified":"2023-01-30T05:04:11Z","cwes":["CWE-121"],"updated_at":"2026-11-02T14:46:59.354373Z"}],"nvd":[{"id":"CVE-2021-42705","description":"PLC Editor Versions 1.3.8 and prior is vulnerable to a stack-based buffer overflow while processing project files, which may allow an attacker to execute arbitrary code.","status":"published","published":"2021-11-22T20:15:17.95Z","modified":"2026-06-17T04:09:59.127Z","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-121"],"updated_at":"2026-11-02T14:07:01.428028Z"}]}}