Security Advisory

CVE-2021-32986

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2022-04-04 19:45:56

Last updated 2025-04-16 16:31:33

Assigner icscert

State PUBLISHED

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.

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