VULNERABILITY INTELLIGENCE

CVE-2021-32986

CVSS score9.8 CRITICAL
EPSS probability1.11%
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:H/A:H

Description

After Automation Direct CLICK PLC CPU Modules: C0-1x CPUs with firmware prior to v3.00 is unlocked by an authorized user, the unlocked state does not timeout. If the programming software is interrupted, the PLC remains unlocked. All subsequent programming connections are allowed without authorization. The PLC is only relocked by a power cycle, or when the programming software disconnects correctly.

Weakness classification

  • ics-cert@hq.dhs.gov: CWE-288
  • nvd@nist.gov: CWE-863

Primary references