CVEs-PoC/2021/CVE-2021-21971.md

### [CVE-2021-21971](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21971)
![](https://img.shields.io/static/v1?label=Product&message=Sealevel&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=Sealevel%20Systems%2C%20Inc.%20SeaConnect%20370W%20v1.3.34%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-787%3A%20Out-of-bounds%20Write&color=brightgreen)

### Description

An out-of-bounds write vulnerability exists in the URL_decode functionality of Sealevel Systems, Inc. SeaConnect 370W v1.3.34. A specially-crafted MQTT payload can lead to an out-of-bounds write. An attacker can perform a man-in-the-middle attack to trigger this vulnerability.

### POC

#### Reference
- https://talosintelligence.com/vulnerability_reports/TALOS-2021-1406

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