cve/2021/CVE-2021-32980.md

### [CVE-2021-32980](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-32980)
![](https://img.shields.io/static/v1?label=Product&message=CLICK%20PLC%20CPU%20Modules%3A%20C0-1x%20CPUs&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3C%203.00%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-288%3A%20Authentication%20Bypass%20Using%20an%20Alternate%20Path%20or%20Channel&color=brighgreen)

### 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.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/ARPSyndicate/cvemon
- https://github.com/vishaalmehta1/AdeenAyub