Vulnerability · Published Apr 4, 2022 · Assigned by icscert
CVE-2021-32984Automation Direct CLICK PLC CPU Modules Authentication Bypass Using an Alternate Path or Channel
Critical 9.8
In plain English
A critical-severity authentication bypass in CLICK PLC CPU Modules: C0-1x CPUs from Automation Direct. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 66% of all known vulnerabilities).
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)1.1%top 33.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Automation Direct | CLICK PLC CPU Modules: C0-1x CPUs | unspecified – before 3.00 |
Weakness: CWE-288 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://www.cisa.gov/uscert/ics/advisories/icsa-21-166-02 x_refsource_CONFIRM