cve/2021/CVE-2021-21962.md

### [CVE-2021-21962](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21962)
![](https://img.shields.io/static/v1?label=Product&message=Sealevel&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-122%3A%20Heap-based%20Buffer%20Overflow&color=brighgreen)

### Description

A heap-based buffer overflow vulnerability exists in the OTA Update u-download functionality of Sealevel Systems, Inc. SeaConnect 370W v1.3.34. A series of specially-crafted MQTT payloads can lead to remote code execution. An attacker must perform a man-in-the-middle attack in order to trigger this vulnerability.

### POC

#### Reference
- https://talosintelligence.com/vulnerability_reports/TALOS-2021-1390

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