Unrated severityNVD Advisory· Published Apr 4, 2022· Updated Apr 16, 2025
Automation Direct CLICK PLC CPU Modules Authentication Bypass Using an Alternate Path or Channel
CVE-2021-32984
Description
All programming connections receive the same unlocked privileges, which can result in a privilege escalation. During the time Automation Direct CLICK PLC CPU Modules: C0-1x CPUs with firmware prior to v3.00 is unlocked by an authorized user, an attacker can connect to the PLC and read the project without authorization.
Affected products
2<3.00+ 1 more
- (no CPE)range: <3.00
- (no CPE)range: unspecified
Patches
Vulnerability mechanics
References
1- www.cisa.gov/uscert/ics/advisories/icsa-21-166-02mitrex_refsource_CONFIRM
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