{"id":"CVE-2018-7833","aliases":["EUVD-2018-19545","GHSA-46rq-v233-vjx5"],"status":"published","title":"An Improper Check for Unusual or Exceptional Conditions vulnerability exists in the embedded web...","description":"An Improper Check for Unusual or Exceptional Conditions vulnerability exists in the embedded web servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 where an unauthenticated user can send a specially crafted XML data via a POST request to cause the web server to become unavailable","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.01381,"percentile":0.72301,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-754"],"published":"2018-12-17T22:00:00Z","modified":"2026-06-17T02:03:49Z","products":[{"vendor":"schneider electric se","product":"embedded web servers in all modicon m340, premium, quantum plcs and bmxnor0200"},{"vendor":"schneider-electric","product":"modicom_bmxnor0200h_firmware"},{"vendor":"schneider-electric","product":"modicom_m340_firmware"},{"vendor":"schneider-electric","product":"modicom_premium_firmware"},{"vendor":"schneider-electric","product":"modicom_quantum_firmware"}],"references":[{"url":"https://www.schneider-electric.com/en/download/document/SEVD-2018-327-01/","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-7833"},{"url":"https://github.com/advisories/GHSA-46rq-v233-vjx5"}],"sources":{"cve":[{"id":"CVE-2018-7833","description":"An Improper Check for Unusual or Exceptional Conditions vulnerability exists in the embedded web servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 where an unauthenticated user can send a specially crafted XML data via a POST request to cause the web server to become unavailable","status":"published","published":"2018-12-17T22:00:00Z","modified":"2024-08-05T06:37:59.565Z","updated_at":"2026-11-02T14:35:10.313768Z"}],"euvd":[{"id":"EUVD-2018-19545","description":"An Improper Check for Unusual or Exceptional Conditions vulnerability exists in the embedded web servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 where an unauthenticated user can send a specially crafted XML data via a POST request to cause the web server to become unavailable","status":"published","published":"2018-12-17T22:00:00Z","modified":"2024-08-05T06:37:59Z","updated_at":"2026-11-03T02:40:04.680788Z"}],"ghsa":[{"id":"GHSA-46rq-v233-vjx5","title":"An Improper Check for Unusual or Exceptional Conditions vulnerability exists in the embedded web...","description":"An Improper Check for Unusual or Exceptional Conditions vulnerability exists in the embedded web servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 where an unauthenticated user can send a specially crafted XML data via a POST request to cause the web server to become unavailable","status":"published","published":"2022-05-14T01:44:58Z","modified":"2023-02-02T05:04:14Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-754"],"updated_at":"2026-11-02T14:51:49.55689Z"}],"nvd":[{"id":"CVE-2018-7833","description":"An Improper Check for Unusual or Exceptional Conditions vulnerability exists in the embedded web servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 where an unauthenticated user can send a specially crafted XML data via a POST request to cause the web server to become unavailable","status":"published","published":"2018-12-17T22:29:00.347Z","modified":"2026-06-17T02:03:49.58Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-754"],"updated_at":"2026-11-02T14:04:50.99633Z"}]}}