{"id":"CVE-2021-37400","aliases":["EUVD-2021-23969","GHSA-gv42-v83p-3gw3"],"status":"published","title":"An attacker may obtain the user credentials from the communication between the PLC and the...","description":"An attacker may obtain the user credentials from the communication between the PLC and the software. As a result, the PLC user program may be uploaded, altered, and/or downloaded.","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":0.01384,"percentile":0.72551,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-522"],"published":"2021-12-28T12:09:59Z","modified":"2026-06-17T04:00:28Z","products":[{"vendor":"idec","product":"data_file_manager"},{"vendor":"idec","product":"ft1a_smartaxix_lite_firmware"},{"vendor":"idec","product":"ft1a_smartaxix_pro_firmware"},{"vendor":"idec","product":"microsmart_fc6a_firmware"},{"vendor":"idec","product":"microsmart_fc6b_firmware"},{"vendor":"idec","product":"microsmart_plus_fc6a_firmware"},{"vendor":"idec","product":"microsmart_plus_fc6b_firmware"},{"vendor":"idec","product":"windedit"},{"vendor":"idec","product":"windldr"}],"references":[{"url":"https://us.idec.com/idec-us/en/USD/Programmable-Logic-Controller/Micro-PLC/FC6A-MicroSmart/c/MicroSmart_FC6A","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://us.idec.com/idec-us/en/USD/Software-Downloads-Automation-Organizer","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://www.idec.com/home/lp/pdf/2021-12-24-PLC.pdf","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://jvn.jp/en/vu/JVNVU92279973/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-37400"},{"url":"https://github.com/advisories/GHSA-gv42-v83p-3gw3"}],"sources":{"cve":[{"id":"CVE-2021-37400","description":"An attacker may obtain the user credentials from the communication between the PLC and the software. As a result, the PLC user program may be uploaded, altered, and/or downloaded.","status":"published","published":"2021-12-28T12:09:59Z","modified":"2024-08-04T01:16:04.056Z","updated_at":"2026-11-02T14:32:58.359368Z"}],"euvd":[{"id":"EUVD-2021-23969","description":"An attacker may obtain the user credentials from the communication between the PLC and the software. As a result, the PLC user program may be uploaded, altered, and/or downloaded.","status":"published","published":"2021-12-28T12:09:59Z","modified":"2024-08-04T01:16:04Z","updated_at":"2026-11-03T03:24:27.725787Z"}],"ghsa":[{"id":"GHSA-gv42-v83p-3gw3","title":"An attacker may obtain the user credentials from the communication between the PLC and the...","description":"An attacker may obtain the user credentials from the communication between the PLC and the software. As a result, the PLC user program may be uploaded, altered, and/or downloaded.","status":"published","published":"2021-12-29T00:00:45Z","modified":"2023-02-03T05:03:38Z","cwes":["CWE-522"],"updated_at":"2026-11-02T14:53:23.659712Z"}],"nvd":[{"id":"CVE-2021-37400","description":"An attacker may obtain the user credentials from the communication between the PLC and the software. As a result, the PLC user program may be uploaded, altered, and/or downloaded.","status":"published","published":"2021-12-28T13:15:08.207Z","modified":"2026-06-17T04:00:28.223Z","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-522"],"updated_at":"2026-11-02T14:07:02.977492Z"}]}}