{"cve":"CVE-2021-32986","nvd":{"published":"2022-04-04T20:15:09.207","modified":"2026-06-17T03:53:57.377","status":"Modified","description":"After Automation Direct CLICK PLC CPU Modules: C0-1x CPUs with firmware prior to v3.00 is unlocked by an authorized user, the unlocked state does not timeout. If the programming software is interrupted, the PLC remains unlocked. All subsequent programming connections are allowed without authorization. The PLC is only relocked by a power cycle, or when the programming software disconnects correctly.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-863","CWE-288"],"references":["https://www.cisa.gov/uscert/ics/advisories/icsa-21-166-02","https://www.cisa.gov/uscert/ics/advisories/icsa-21-166-02"],"products":["automationdirect:c0-10are-d_firmware","automationdirect:c0-10dd1e-d_firmware","automationdirect:c0-10dd2e-d_firmware","automationdirect:c0-10dre-d_firmware","automationdirect:c0-11are-d_firmware","automationdirect:c0-11dd1e-d_firmware","automationdirect:c0-11dd2e-d_firmware","automationdirect:c0-11dre-d_firmware","automationdirect:c0-12are-1-d_firmware","automationdirect:c0-12are-2-d_firmware","automationdirect:c0-12are-d_firmware","automationdirect:c0-12dd1e-1-d_firmware","automationdirect:c0-12dd1e-2-d_firmware","automationdirect:c0-12dd1e-d_firmware","automationdirect:c0-12dd2e-1-d_firmware","automationdirect:c0-12dd2e-2-d_firmware","automationdirect:c0-12dd2e-d_firmware","automationdirect:c0-12dre-1-d_firmware","automationdirect:c0-12dre-2-d_firmware","automationdirect:c0-12dre-d_firmware"],"source":"nvd","synced_at":"2026-10-19T21:29:06.454770966+00:00"},"epss":{"cve":"CVE-2021-32986","score":0.01113,"percentile":0.66008,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}