{"id":"CVE-2020-7536","aliases":["EUVD-2020-28661","GHSA-7f68-748r-v7xr"],"status":"published","title":"A CWE-754:Improper Check for Unusual or Exceptional Conditions vulnerability exists in Modicon...","description":"A CWE-754:Improper Check for Unusual or Exceptional Conditions vulnerability exists in Modicon M340 CPUs (BMXP34* versions prior to V3.30) Modicon M340 Communication Ethernet modules (BMXNOE0100 (H) versions prior to V3.4 BMXNOE0110 (H) versions prior to V6.6 BMXNOR0200H all versions), that could cause the device to be unreachable when modifying network parameters over SNMP.","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":"2026-11-11","score":0.01169,"percentile":0.67811,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-754"],"published":"2020-12-11T00:46:18Z","modified":"2026-06-17T03:24:57Z","products":[{"vendor":"schneider-electric","product":"bmxnoe0100_firmware"},{"vendor":"schneider-electric","product":"bmxnoe0110_firmware"},{"vendor":"schneider-electric","product":"bmxnor0200h_firmware"},{"vendor":"schneider-electric","product":"modicon_m340_bmxp341000_firmware"},{"vendor":"schneider-electric","product":"modicon_m340_bmxp342000_firmware"},{"vendor":"schneider-electric","product":"modicon_m340_bmxp3420102_firmware"},{"vendor":"schneider-electric","product":"modicon_m340_bmxp3420102cl_firmware"},{"vendor":"schneider-electric","product":"modicon_m340_bmxp342020_firmware"},{"vendor":"schneider-electric","product":"modicon_m340_bmxp3420302_firmware"},{"vendor":"schneider-electric","product":"modicon_m340_bmxp3420302cl_firmware"}],"references":[{"url":"https://security.cse.iitk.ac.in/responsible-disclosure","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://www.se.com/ww/en/download/document/SEVD-2020-343-07/","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-7536"},{"url":"https://github.com/advisories/GHSA-7f68-748r-v7xr"}],"sources":{"cve":[{"id":"CVE-2020-7536","description":"A CWE-754:Improper Check for Unusual or Exceptional Conditions vulnerability exists in Modicon M340 CPUs (BMXP34* versions prior to V3.30) Modicon M340 Communication Ethernet modules (BMXNOE0100 (H) versions prior to V3.4 BMXNOE0110 (H) versions prior to V6.6 BMXNOR0200H all versions), that could cause the device to be unreachable when modifying network parameters over SNMP.","status":"published","published":"2020-12-11T00:46:18Z","modified":"2024-08-04T09:33:19.463Z","cwes":["CWE-754"],"updated_at":"2026-11-02T14:35:58.331892Z"}],"euvd":[{"id":"EUVD-2020-28661","description":"A CWE-754:Improper Check for Unusual or Exceptional Conditions vulnerability exists in Modicon M340 CPUs (BMXP34* versions prior to V3.30) Modicon M340 Communication Ethernet modules (BMXNOE0100 (H) versions prior to V3.4 BMXNOE0110 (H) versions prior to V6.6 BMXNOR0200H all versions), that could cause the device to be unreachable when modifying network parameters over SNMP.","status":"published","published":"2020-12-11T00:46:18Z","modified":"2024-08-04T09:33:19Z","updated_at":"2026-11-03T03:07:59.603443Z"}],"ghsa":[{"id":"GHSA-7f68-748r-v7xr","title":"A CWE-754:Improper Check for Unusual or Exceptional Conditions vulnerability exists in Modicon...","description":"A CWE-754:Improper Check for Unusual or Exceptional Conditions vulnerability exists in Modicon M340 CPUs (BMXP34* versions prior to V3.30) Modicon M340 Communication Ethernet modules (BMXNOE0100 (H) versions prior to V3.4 BMXNOE0110 (H) versions prior to V6.6 BMXNOR0200H all versions), that could cause the device to be unreachable when modifying network parameters over SNMP.","status":"published","published":"2022-05-24T17:36:07Z","modified":"2023-01-29T05:04:43Z","cwes":["CWE-754"],"updated_at":"2026-11-02T14:45:37.465361Z"}],"nvd":[{"id":"CVE-2020-7536","description":"A CWE-754:Improper Check for Unusual or Exceptional Conditions vulnerability exists in Modicon M340 CPUs (BMXP34* versions prior to V3.30) Modicon M340 Communication Ethernet modules (BMXNOE0100 (H) versions prior to V3.4 BMXNOE0110 (H) versions prior to V6.6 BMXNOR0200H all versions), that could cause the device to be unreachable when modifying network parameters over SNMP.","status":"published","published":"2020-12-11T01:15:12.19Z","modified":"2026-06-17T03:24:57.813Z","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":7.8,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-754"],"updated_at":"2026-11-02T14:06:27.10541Z"}]}}