{"id":"CVE-2021-32984","aliases":["EUVD-2021-19705","GHSA-w93w-26gf-h3c5"],"status":"published","title":"Automation Direct CLICK PLC CPU Modules Authentication Bypass Using an Alternate Path or Channel","description":"All programming connections receive the same unlocked privileges, which can result in a privilege escalation. During the time Automation Direct CLICK PLC CPU Modules: C0-1x CPUs with firmware prior to v3.00 is unlocked by an authorized user, an attacker can connect to the PLC and read the project without authorization.","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":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.01113,"percentile":0.66275,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-287","CWE-288"],"published":"2022-04-04T19:45:55Z","modified":"2026-06-17T03:53:57Z","products":[{"vendor":"automation direct","product":"click plc cpu modules: c0-1x cpus"},{"vendor":"automationdirect","product":"c0-10are-d_firmware"},{"vendor":"automationdirect","product":"c0-10dd1e-d_firmware"},{"vendor":"automationdirect","product":"c0-10dd2e-d_firmware"},{"vendor":"automationdirect","product":"c0-10dre-d_firmware"},{"vendor":"automationdirect","product":"c0-11are-d_firmware"},{"vendor":"automationdirect","product":"c0-11dd1e-d_firmware"},{"vendor":"automationdirect","product":"c0-11dd2e-d_firmware"},{"vendor":"automationdirect","product":"c0-11dre-d_firmware"},{"vendor":"automationdirect","product":"c0-12are-1-d_firmware"},{"vendor":"automationdirect","product":"c0-12are-2-d_firmware"},{"vendor":"automationdirect","product":"c0-12are-d_firmware"},{"vendor":"automationdirect","product":"c0-12dd1e-1-d_firmware"},{"vendor":"automationdirect","product":"c0-12dd1e-2-d_firmware"},{"vendor":"automationdirect","product":"c0-12dd1e-d_firmware"},{"vendor":"automationdirect","product":"c0-12dd2e-1-d_firmware"},{"vendor":"automationdirect","product":"c0-12dd2e-2-d_firmware"},{"vendor":"automationdirect","product":"c0-12dd2e-d_firmware"},{"vendor":"automationdirect","product":"c0-12dre-1-d_firmware"},{"vendor":"automationdirect","product":"c0-12dre-2-d_firmware"},{"vendor":"automationdirect","product":"c0-12dre-d_firmware"}],"references":[{"url":"https://www.cisa.gov/uscert/ics/advisories/icsa-21-166-02","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-32984"},{"url":"https://github.com/advisories/GHSA-w93w-26gf-h3c5"}],"sources":{"cve":[{"id":"CVE-2021-32984","title":"Automation Direct CLICK PLC CPU Modules Authentication Bypass Using an Alternate Path or Channel","description":"All programming connections receive the same unlocked privileges, which can result in a privilege escalation. During the time Automation Direct CLICK PLC CPU Modules: C0-1x CPUs with firmware prior to v3.00 is unlocked by an authorized user, an attacker can connect to the PLC and read the project without authorization.","status":"published","published":"2022-04-04T19:45:55Z","modified":"2025-04-16T16:31:41.1Z","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":"cna"}],"cwes":["CWE-288"],"updated_at":"2026-11-02T14:33:07.014772Z"}],"euvd":[{"id":"EUVD-2021-19705","description":"All programming connections receive the same unlocked privileges, which can result in a privilege escalation. During the time Automation Direct CLICK PLC CPU Modules: C0-1x CPUs with firmware prior to v3.00 is unlocked by an authorized user, an attacker can connect to the PLC and read the project without authorization.","status":"published","published":"2022-04-04T19:45:55Z","modified":"2025-04-16T16:31:41Z","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"}],"updated_at":"2026-11-02T20:52:23.922531Z"}],"ghsa":[{"id":"GHSA-w93w-26gf-h3c5","title":"All programming connections receive the same unlocked privileges, which can result in a privilege...","description":"All programming connections receive the same unlocked privileges, which can result in a privilege escalation. During the time Automation Direct CLICK PLC CPU Modules: C0-1x CPUs with firmware prior to v3.00 is unlocked by an authorized user, an attacker can connect to the PLC and read the project without authorization.","status":"published","published":"2022-04-05T00:00:23Z","modified":"2023-01-27T05:01:19Z","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":"2026-11-02T14:41:52.138061Z"}],"nvd":[{"id":"CVE-2021-32984","description":"All programming connections receive the same unlocked privileges, which can result in a privilege escalation. During the time Automation Direct CLICK PLC CPU Modules: C0-1x CPUs with firmware prior to v3.00 is unlocked by an authorized user, an attacker can connect to the PLC and read the project without authorization.","status":"published","published":"2022-04-04T20:15:09.1Z","modified":"2026-06-17T03:53:57.087Z","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":"secondary"},{"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-288","CWE-287"],"updated_at":"2026-11-02T14:07:05.581807Z"}]}}