Security Advisory
CVE-2021-32986
9.8
CRITICAL
Vulnerability 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.
Published Date
April 4, 2022
Official Source
NIST NVD Advisory