{"cve":"CVE-2021-32980","nvd":{"published":"2022-04-04T20:15:08.940","modified":"2026-06-17T03:53:56.460","status":"Modified","description":"Automation Direct CLICK PLC CPU Modules: C0-1x CPUs with firmware prior to v3.00 does not protect against additional software programming connections. An attacker can connect to the PLC while an existing connection is already active.","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-287","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-2021-32980","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."]}