cve/2021/CVE-2021-41039.md

### [CVE-2021-41039](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41039)
![](https://img.shields.io/static/v1?label=Product&message=Eclipse%20Mosquitto&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=1.6%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=unspecified%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-1050&color=brightgreen)

### Description

In versions 1.6 to 2.0.11 of Eclipse Mosquitto, an MQTT v5 client connecting with a large number of user-property properties could cause excessive CPU usage, leading to a loss of performance and possible denial of service.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/FyneWix/SIOT