CVE-2021-32978

HIGH

Automation Direct CLICK PLC CPU <v3.00 - Info Disclosure

Title source: llm

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.

References (1)

[Third Party Advisory, US Government Resource] https://www.cisa.gov/uscert/ics/advisories/icsa-21-166-02

Scores

CVSS v3 7.5

EPSS 0.0022

EPSS Percentile 44.4%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-522 CWE-256

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