{"id":"CVE-2020-7533","aliases":["EUVD-2020-28658","GHSA-4wm4-5vmp-66g7"],"status":"published","title":"A CWE-255: Credentials Management vulnerability exists in Web Server on Modicon M340, Modicon...","description":"CWE-287: Improper Authentication vulnerability exists which could cause the execution of\ncommands on the webserver without authentication when sending specially crafted HTTP\nrequests.","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":"2026-11-11","score":0.02336,"percentile":0.838,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-287"],"published":"2020-12-01T14:47:02Z","modified":"2026-06-17T03:24:57Z","products":[{"vendor":"schneider-electric","product":"140cpu65260_firmware"},{"vendor":"schneider-electric","product":"140noc77101_firmware"},{"vendor":"schneider-electric","product":"140noc78000_firmware"},{"vendor":"schneider-electric","product":"140noe77111_firmware"},{"vendor":"schneider-electric","product":"bmxnoc0401_firmware"},{"vendor":"schneider-electric","product":"bmxnoe0100_firmware"},{"vendor":"schneider-electric","product":"bmxnoe0110_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_bmxp3420302_firmware"},{"vendor":"schneider-electric","product":"tsxety4103_firmware"},{"vendor":"schneider-electric","product":"tsxety5103_firmware"},{"vendor":"schneider-electric","product":"tsxp574634_firmware"},{"vendor":"schneider-electric","product":"tsxp575634_firmware"},{"vendor":"schneider-electric","product":"tsxp576634_firmware"}],"references":[{"url":"https://download.schneider-electric.com/files?p_File_Name=SEVD-2020-287-01_Modicon_Web_Server_Security_Notificatiton.pdf\u0026p_Doc_Ref=SEVD-2020-287-01\u0026p_enDocType=Security+and+Safety+Notice"},{"url":"https://www.se.com/ww/en/download/document/SEVD-2020-287-01/","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-7533"},{"url":"https://www.se.com/ww/en/download/document/SEVD-2020-287-01"},{"url":"https://github.com/advisories/GHSA-4wm4-5vmp-66g7"}],"sources":{"cve":[{"id":"CVE-2020-7533","description":"CWE-287: Improper Authentication vulnerability exists which could cause the execution of\ncommands on the webserver without authentication when sending specially crafted HTTP\nrequests.","status":"published","published":"2020-12-01T14:47:02Z","modified":"2025-06-10T08:02:15.209Z","cwes":["CWE-287"],"updated_at":"2026-11-02T14:35:58.331892Z"}],"euvd":[{"id":"EUVD-2020-28658","description":"CWE-287: Improper Authentication vulnerability exists which could cause the execution of\ncommands on the webserver without authentication when sending specially crafted HTTP\nrequests.","status":"published","published":"2020-12-01T14:47:02Z","modified":"2025-06-10T08:02:15Z","updated_at":"2026-11-02T20:32:27.346488Z"}],"ghsa":[{"id":"GHSA-4wm4-5vmp-66g7","title":"A CWE-255: Credentials Management vulnerability exists in Web Server on Modicon M340, Modicon...","description":"A CWE-255: Credentials Management vulnerability exists in Web Server on Modicon M340, Modicon Quantum and ModiconPremium Legacy offers and their Communication Modules (see security notification for version information) which could cause the execution of commands on the webserver without authentication when sending specially crafted HTTP requests.","status":"published","published":"2022-05-24T17:35:21Z","modified":"2025-06-10T09:31:34Z","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"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T15:02:38.912983Z"}],"nvd":[{"id":"CVE-2020-7533","description":"CWE-287: Improper Authentication vulnerability exists which could cause the execution of\ncommands on the webserver without authentication when sending specially crafted HTTP\nrequests.","status":"published","published":"2020-12-01T15:15:12.19Z","modified":"2026-06-17T03:24:57.373Z","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":"2026-11-02T14:06:25.394006Z"}]}}