cve/2021/CVE-2021-20999.md

### [CVE-2021-20999](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20999)
![](https://img.shields.io/static/v1?label=Product&message=IOT-GW30%20(No.%202682620000)&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=IOT-GW30-4G-EU%20(No.%202682630000)&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=UC20-WL2000-AC%20(No.%201334950000)&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=UC20-WL2000-IOT%20(No.%201334990000)&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=1.3.0%3C%3D%201.9.0%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-668%20Exposure%20of%20Resource%20to%20Wrong%20Sphere&color=brighgreen)

### Description

In Weidmüller u-controls and IoT-Gateways in versions up to 1.12.1 a network port intended only for device-internal usage is accidentally accessible via external network interfaces. By exploiting this vulnerability the device may be manipulated or the operation may be stopped.

### POC

#### Reference
- https://cert.vde.com/en-us/advisories/vde-2021-016

#### Github
No PoCs found on GitHub currently.