Paper/Archive/CVE-2021-32980

CVE-2021-32980

Automation Direct CLICK PLC CPU Modules: C0-1x CPUs — Automation Direct CLICK PLC CPU Modules Authentication Bypass Using an Alternate Path or Channel

EPSS 1%CVSS 9.8

critical.is priorityof 100

CVSS 9.8 (CNA, NVD agree)9.8 / 10 × 3029.4 Not in CISA KEV+300.0 EPSS percentile 66.0.660 × 2013.2 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource

CLICK PLC CPU Modules: C0-1x CPUsunspecified – < 3.003.00CNA

Scores by source

icscert (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refcisa.gov/uscert/ics/advisories/icsa-21-166-02