{"id":"CVE-2019-6811","aliases":["EUVD-2019-16365","GHSA-3xxj-wpwj-gxhm"],"status":"published","title":"An Improper Check for Unusual or Exceptional Conditions (CWE-754) vulnerability exists in Modicon...","description":"An Improper Check for Unusual or Exceptional Conditions (CWE-754) vulnerability exists in Modicon Quantum 140 NOE771x1 version 6.9 and earlier, which could cause denial of service when the module receives an IP fragmented packet with a length greater than 65535 bytes. The module then requires a power cycle to recover.","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":"2026-11-10","score":0.0131,"percentile":0.70888,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-754"],"published":"2019-09-17T19:55:08Z","modified":"2026-06-17T02:39:43Z","products":[{"vendor":"schneider electric se","product":"modicon quantum 140 noe771x1"},{"vendor":"schneider-electric","product":"modicon_quantum_140noe77101_firmware"},{"vendor":"schneider-electric","product":"modicon_quantum_140noe77111_firmware"}],"references":[{"url":"https://www.schneider-electric.com/en/download/document/SEVD-2019-253-02/","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-6811"},{"url":"https://github.com/advisories/GHSA-3xxj-wpwj-gxhm"}],"sources":{"cve":[{"id":"CVE-2019-6811","description":"An Improper Check for Unusual or Exceptional Conditions (CWE-754) vulnerability exists in Modicon Quantum 140 NOE771x1 version 6.9 and earlier, which could cause denial of service when the module receives an IP fragmented packet with a length greater than 65535 bytes. The module then requires a power cycle to recover.","status":"published","published":"2019-09-17T19:55:08Z","modified":"2024-08-04T20:31:04.258Z","cwes":["CWE-754"],"updated_at":"2026-11-02T14:20:23.048861Z"}],"euvd":[{"id":"EUVD-2019-16365","description":"An Improper Check for Unusual or Exceptional Conditions (CWE-754) vulnerability exists in Modicon Quantum 140 NOE771x1 version 6.9 and earlier, which could cause denial of service when the module receives an IP fragmented packet with a length greater than 65535 bytes. The module then requires a power cycle to recover.","status":"published","published":"2019-09-17T19:55:08Z","modified":"2024-08-04T20:31:04Z","updated_at":"2026-11-03T03:06:48.069977Z"}],"ghsa":[{"id":"GHSA-3xxj-wpwj-gxhm","title":"An Improper Check for Unusual or Exceptional Conditions (CWE-754) vulnerability exists in Modicon...","description":"An Improper Check for Unusual or Exceptional Conditions (CWE-754) vulnerability exists in Modicon Quantum 140 NOE771x1 version 6.9 and earlier, which could cause denial of service when the module receives an IP fragmented packet with a length greater than 65535 bytes. The module then requires a power cycle to recover.","status":"published","published":"2022-05-24T16:56:23Z","modified":"2023-02-02T05:07:54Z","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":"2026-11-02T14:52:37.024984Z"}],"nvd":[{"id":"CVE-2019-6811","description":"An Improper Check for Unusual or Exceptional Conditions (CWE-754) vulnerability exists in Modicon Quantum 140 NOE771x1 version 6.9 and earlier, which could cause denial of service when the module receives an IP fragmented packet with a length greater than 65535 bytes. The module then requires a power cycle to recover.","status":"published","published":"2019-09-17T20:15:11.92Z","modified":"2026-06-17T02:39:43.46Z","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":"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":"2026-11-02T14:05:28.126831Z"}]}}