VULNERABILITY INTELLIGENCE

CVE-2021-32978

CVSS score7.5 HIGH
EPSS probability1.01%
CISA KEVNot currently listed
Published2022-04-04
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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.

Weakness classification

  • ics-cert@hq.dhs.gov: CWE-256
  • nvd@nist.gov: CWE-522

Primary references