{"id":"CVE-2021-32978","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-32978","generatedAt":"2026-10-27T22:33:49.158Z","title":"The programming protocol allows for a previously entered password and lock state to be read by an attacker.","description":"The programming protocol allows for a previously entered password and lock state to be read by an attacker. If the previously entered password was successful, the attacker can then use the password to unlock Automation Direct CLICK PLC CPU Modules: C0-1x CPUs with firmware prior to v3.00.","published":"2022-04-04T20:15:09.000Z","lastModified":"2026-06-17T03:53:56.000Z","status":"Modified","sourceIdentifier":"ics-cert@hq.dhs.gov","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},"cwe":["CWE-256","CWE-522"],"affected":["automationdirect/c0-10dd1e-d firmware","automationdirect/c0-10dd2e-d firmware","automationdirect/c0-10dre-d firmware","automationdirect/c0-10are-d firmware","automationdirect/c0-11dd1e-d firmware","automationdirect/c0-11dd2e-d firmware","automationdirect/c0-11dre-d firmware","automationdirect/c0-11are-d firmware","automationdirect/c0-12dd1e-d firmware","automationdirect/c0-12dd2e-d firmware","automationdirect/c0-12dre-d firmware","automationdirect/c0-12are-d firmware","automationdirect/c0-12dd1e-1-d firmware","automationdirect/c0-12dd2e-1-d firmware","automationdirect/c0-12dre-1-d firmware","automationdirect/c0-12are-1-d firmware","automationdirect/c0-12dd1e-2-d firmware","automationdirect/c0-12dd2e-2-d firmware","automationdirect/c0-12dre-2-d firmware","automationdirect/c0-12are-2-d firmware"],"epss":{"score":0.0101,"percentile":0.6288,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (1.01%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://www.cisa.gov/uscert/ics/advisories/icsa-21-166-02","tags":["Third Party Advisory","US Government Resource"],"source":"ics-cert@hq.dhs.gov"},{"url":"https://www.cisa.gov/uscert/ics/advisories/icsa-21-166-02","tags":["Third Party Advisory","US Government Resource"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-32978","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}