CVE-2021-32980

CRITICAL

Automation Direct CLICK PLC CPU <3.00 - Privilege Escalation

Title source: llm

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.

References (1)

Core 1

Core References

Third Party Advisory, US Government Resource x_refsource_confirm

https://www.cisa.gov/uscert/ics/advisories/icsa-21-166-02

Scores

CVSS v3 9.8

EPSS 0.0104

EPSS Percentile 59.4%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact total

Details

CWE

CWE-287 CWE-288

Status published

Products (20)

automationdirect/c0-10are-d_firmware < 3.00

automationdirect/c0-10dd1e-d_firmware < 3.00

automationdirect/c0-10dd2e-d_firmware < 3.00

automationdirect/c0-10dre-d_firmware < 3.00

automationdirect/c0-11are-d_firmware < 3.00

automationdirect/c0-11dd1e-d_firmware < 3.00

automationdirect/c0-11dd2e-d_firmware < 3.00

automationdirect/c0-11dre-d_firmware < 3.00

automationdirect/c0-12are-1-d_firmware < 3.00

automationdirect/c0-12are-2-d_firmware < 3.00

... and 10 more

Published Apr 04, 2022

Tracked Since Feb 18, 2026