{"id":"CVE-2018-7856","aliases":["EUVD-2018-19568","GHSA-g8pp-m4fh-wjg4"],"status":"published","title":"A CWE-248: Uncaught Exception vulnerability exists in all versions of the Modicon M580, Modicon...","description":"A CWE-248: Uncaught Exception vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause a possible denial of Service when writing invalid memory blocks to the controller over Modbus.","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":0.01582,"percentile":0.75702,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-754"],"published":"2019-05-22T20:03:45Z","modified":"2026-06-17T02:03:52Z","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","Mitigation","Vendor Advisory"]},{"url":"https://www.talosintelligence.com/vulnerability_reports/TALOS-2019-0767","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-7856"},{"url":"https://github.com/advisories/GHSA-g8pp-m4fh-wjg4"}],"sources":{"cve":[{"id":"CVE-2018-7856","description":"A CWE-248: Uncaught Exception vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause a possible denial of Service when writing invalid memory blocks to the controller over Modbus.","status":"published","published":"2019-05-22T20:03:45Z","modified":"2024-08-05T06:37:59.599Z","updated_at":"2026-11-02T14:35:10.313768Z"}],"euvd":[{"id":"EUVD-2018-19568","description":"A CWE-248: Uncaught Exception vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause a possible denial of Service when writing invalid memory blocks to the controller over Modbus.","status":"published","published":"2019-05-22T20:03:45Z","modified":"2024-08-05T06:37:59Z","updated_at":"2026-11-03T02:40:04.680788Z"}],"ghsa":[{"id":"GHSA-g8pp-m4fh-wjg4","title":"A CWE-248: Uncaught Exception vulnerability exists in all versions of the Modicon M580, Modicon...","description":"A CWE-248: Uncaught Exception vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause a possible denial of Service when writing invalid memory blocks to the controller over Modbus.","status":"published","published":"2022-05-24T16:46:14Z","modified":"2023-01-28T05:05:10Z","cwes":["CWE-754"],"updated_at":"2026-11-02T14:44:18.5771Z"}],"nvd":[{"id":"CVE-2018-7856","description":"A CWE-248: Uncaught Exception vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause a possible denial of Service when writing invalid memory blocks to the controller over Modbus.","status":"published","published":"2019-05-22T21:29:00.527Z","modified":"2026-06-17T02:03:52.483Z","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":"2026-11-02T14:04:57.307075Z"}]}}