Vulnerability · Published Apr 4, 2022 · Assigned by icscert
CVE-2021-32980Automation 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
Automation Direct CLICK PLC CPU Modules: C0-1x CPUs with firmware prior to v3.00 does not protect against additional software programming connections. An attacker can connect to the PLC while an existing connection is already active.
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