{"id":"CVE-2019-6855","aliases":["EUVD-2019-16409","GHSA-f79p-hq3g-prjw"],"status":"published","title":"An Improper Authorization - CWE-285 vulnerability exists in EcoStruxure? Control Expert V14.0 and...","description":"Incorrect Authorization vulnerability exists in EcoStruxure Control Expert (all versions prior to 14.1 Hot Fix), Unity Pro (all versions), Modicon M340 (all versions prior to V3.20) , and Modicon M580 (all versions prior to V3.10), which could cause a bypass of the authentication process between EcoStruxure Control Expert and the M340 and M580 controllers.","severity":{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00955,"percentile":0.61638,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-863"],"published":"2020-01-06T22:56:58Z","modified":"2026-06-17T02:39:48Z","products":[{"vendor":"schneider-electric","product":"ecostruxure_control_expert"},{"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_bmxp342020_firmware"},{"vendor":"schneider-electric","product":"modicon_m340_bmxp3420302_firmware"},{"vendor":"schneider-electric","product":"modicon_m580_bmeh582040_firmware"},{"vendor":"schneider-electric","product":"modicon_m580_bmeh584040_firmware"},{"vendor":"schneider-electric","product":"modicon_m580_bmeh584040s_firmware"},{"vendor":"schneider-electric","product":"modicon_m580_bmeh586040_firmware"},{"vendor":"schneider-electric","product":"modicon_m580_bmeh586040s_firmware"},{"vendor":"schneider-electric","product":"modicon_m580_bmep581020_firmware"},{"vendor":"schneider-electric","product":"modicon_m580_bmep582020_firmware"},{"vendor":"schneider-electric","product":"modicon_m580_bmep582040_firmware"},{"vendor":"schneider-electric","product":"modicon_m580_bmep582040s_firmware"},{"vendor":"schneider-electric","product":"modicon_m580_bmep583020_firmware"},{"vendor":"schneider-electric","product":"modicon_m580_bmep583040_firmware"},{"vendor":"schneider-electric","product":"modicon_m580_bmep584020_firmware"},{"vendor":"schneider-electric","product":"modicon_m580_bmep584040_firmware"},{"vendor":"schneider-electric","product":"modicon_m580_bmep584040s_firmware"},{"vendor":"schneider-electric","product":"modicon_m580_bmep585040_firmware"},{"vendor":"schneider-electric","product":"modicon_m580_bmep586040_firmware"},{"vendor":"schneider-electric","product":"unity_pro"}],"references":[{"url":"https://www.se.com/ww/en/download/document/SEVD-2019-344-02/","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-6855"},{"url":"https://www.se.com/ww/en/download/document/SEVD-2019-344-02"},{"url":"https://github.com/advisories/GHSA-f79p-hq3g-prjw"}],"sources":{"cve":[{"id":"CVE-2019-6855","description":"Incorrect Authorization vulnerability exists in EcoStruxure Control Expert (all versions prior to 14.1 Hot Fix), Unity Pro (all versions), Modicon M340 (all versions prior to V3.20) , and Modicon M580 (all versions prior to V3.10), which could cause a bypass of the authentication process between EcoStruxure Control Expert and the M340 and M580 controllers.","status":"published","published":"2020-01-06T22:56:58Z","modified":"2024-08-04T20:31:04.396Z","cwes":["CWE-863"],"updated_at":"2026-11-02T14:20:23.381621Z"}],"euvd":[{"id":"EUVD-2019-16409","description":"Incorrect Authorization vulnerability exists in EcoStruxure Control Expert (all versions prior to 14.1 Hot Fix), Unity Pro (all versions), Modicon M340 (all versions prior to V3.20) , and Modicon M580 (all versions prior to V3.10), which could cause a bypass of the authentication process between EcoStruxure Control Expert and the M340 and M580 controllers.","status":"published","published":"2020-01-06T22:56:58Z","modified":"2024-08-04T20:31:04Z","updated_at":"2026-11-03T03:06:47.494697Z"}],"ghsa":[{"id":"GHSA-f79p-hq3g-prjw","title":"An Improper Authorization - CWE-285 vulnerability exists in EcoStruxure? Control Expert V14.0 and...","description":"An Improper Authorization - CWE-285 vulnerability exists in EcoStruxure? Control Expert V14.0 and all versions of Unity Pro (previously calledEcoStruxure? Control Expert), which could allow a bypass of the authentication process between EcoStruxure Control Expert and the controller.","status":"published","published":"2022-05-24T17:05:44Z","modified":"2023-01-29T05:00:58Z","cwes":["CWE-863"],"updated_at":"2026-11-02T14:44:42.615019Z"}],"nvd":[{"id":"CVE-2019-6855","description":"Incorrect Authorization vulnerability exists in EcoStruxure Control Expert (all versions prior to 14.1 Hot Fix), Unity Pro (all versions), Modicon M340 (all versions prior to V3.20) , and Modicon M580 (all versions prior to V3.10), which could cause a bypass of the authentication process between EcoStruxure Control Expert and the M340 and M580 controllers.","status":"published","published":"2020-01-06T23:15:11.237Z","modified":"2026-06-17T02:39:48.333Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high","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-863"],"updated_at":"2026-11-02T14:05:41.313583Z"}]}}