{"id":"CVE-2019-6819","aliases":["EUVD-2019-16373","GHSA-vf99-3r9r-pp36"],"status":"published","title":"A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists which could...","description":"A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists which could cause a possible Denial of Service when specific Modbus frames are sent to the controller in the products: Modicon M340 - firmware versions prior to V3.01, Modicon M580 - firmware versions prior to V2.80, All firmware versions of Modicon Quantum and Modicon Premium.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01129,"percentile":0.6659,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-754"],"published":"2019-05-22T19:45:08Z","modified":"2026-06-17T02:39:44Z","products":[{"vendor":"schneider-electric","product":"modicon_m340_firmware"},{"vendor":"schneider-electric","product":"modicon_m580_firmware"},{"vendor":"schneider-electric","product":"modicon_premium_firmware"},{"vendor":"schneider-electric","product":"modicon_quantum_firmware"}],"references":[{"url":"https://www.schneider-electric.com/en/download/document/SEVD-2019-134-05/","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"http://www.securityfocus.com/bid/109004","tags":["vdb-entry","x_refsource_BID","x_transferred","Broken Link"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-6819"},{"url":"https://www.schneider-electric.com/en/download/document/SEVD-2019-134-05"},{"url":"https://github.com/advisories/GHSA-vf99-3r9r-pp36"}],"sources":{"cve":[{"id":"CVE-2019-6819","description":"A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists which could cause a possible Denial of Service when specific Modbus frames are sent to the controller in the products: Modicon M340 - firmware versions prior to V3.01, Modicon M580 - firmware versions prior to V2.80, All firmware versions of Modicon Quantum and Modicon Premium.","status":"published","published":"2019-05-22T19:45:08Z","modified":"2026-05-29T14:30:11.42Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-754"],"updated_at":"2026-11-02T14:20:23.381621Z"}],"euvd":[{"id":"EUVD-2019-16373","description":"A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists which could cause a possible Denial of Service when specific Modbus frames are sent to the controller in the products: Modicon M340 - firmware versions prior to V3.01, Modicon M580 - firmware versions prior to V2.80, All firmware versions of Modicon Quantum and Modicon Premium.","status":"published","published":"2019-05-22T19:45:08Z","modified":"2026-05-29T14:30:11Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T18:21:01.215325Z"}],"ghsa":[{"id":"GHSA-vf99-3r9r-pp36","title":"A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists which could...","description":"A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists which could cause a possible Denial of Service when specific Modbus frames are sent to the controller in the products: Modicon M340 - firmware versions prior to V3.01, Modicon M580 - firmware versions prior to V2.80, All firmware versions of Modicon Quantum and Modicon Premium.","status":"published","published":"2022-05-24T16:46:17Z","modified":"2026-05-29T15:31:24Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-754"],"updated_at":"2026-11-02T15:08:22.826978Z"}],"nvd":[{"id":"CVE-2019-6819","description":"A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists which could cause a possible Denial of Service when specific Modbus frames are sent to the controller in the products: Modicon M340 - firmware versions prior to V3.01, Modicon M580 - firmware versions prior to V2.80, All firmware versions of Modicon Quantum and Modicon Premium.","status":"published","published":"2019-05-22T20:29:02.09Z","modified":"2026-06-17T02:39:44.09Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"},{"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":"2026-11-02T14:05:14.729983Z"}]}}