{"id":"CVE-2018-7847","aliases":["EUVD-2018-19559","GHSA-frc4-4hp9-9xxf"],"status":"published","title":"A CWE-284: Improper Access Control vulnerability exists in all versions of the Modicon M580,...","description":"A CWE-284: Improper Access Control vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause denial of service or potential code execution by overwriting configuration settings of the controller over Modbus.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.03808,"percentile":0.901,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-284","CWE-287"],"published":"2019-05-22T20:00:04Z","modified":"2026-06-17T02:03:51Z","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-2019-134-11/","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0742","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0743","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-7847"},{"url":"https://github.com/advisories/GHSA-frc4-4hp9-9xxf"}],"sources":{"cve":[{"id":"CVE-2018-7847","description":"A CWE-284: Improper Access Control vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause denial of service or potential code execution by overwriting configuration settings of the controller over Modbus.","status":"published","published":"2019-05-22T20:00:04Z","modified":"2024-08-05T06:37:59.51Z","updated_at":"2026-11-02T14:35:09.908186Z"}],"euvd":[{"id":"EUVD-2018-19559","description":"A CWE-284: Improper Access Control vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause denial of service or potential code execution by overwriting configuration settings of the controller over Modbus.","status":"published","published":"2019-05-22T20:00:04Z","modified":"2024-08-05T06:37:59Z","updated_at":"2026-11-03T02:40:04.680788Z"}],"ghsa":[{"id":"GHSA-frc4-4hp9-9xxf","title":"A CWE-284: Improper Access Control vulnerability exists in all versions of the Modicon M580,...","description":"A CWE-284: Improper Access Control vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause denial of service or potential code execution by overwriting configuration settings of the controller over Modbus.","status":"published","published":"2022-05-24T16:46:13Z","modified":"2023-01-28T05:05:33Z","cwes":["CWE-284","CWE-287"],"updated_at":"2026-11-02T14:44:21.48183Z"}],"nvd":[{"id":"CVE-2018-7847","description":"A CWE-284: Improper Access Control vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause denial of service or potential code execution by overwriting configuration settings of the controller over Modbus.","status":"published","published":"2019-05-22T20:29:01.697Z","modified":"2026-06-17T02:03:51.313Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:04:57.307075Z"}]}}