cve/2021/CVE-2021-31786.md

### [CVE-2021-31786](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31786)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

The Bluetooth Classic Audio implementation on Actions ATS2815 and ATS2819 devices does not properly handle a connection attempt from a host with the same BDAddress as the current connected BT host, allowing attackers to trigger a disconnection and deadlock of the device by connecting with a forged BDAddress that matches the original connected host.

### POC

#### Reference
- https://dl.packetstormsecurity.net/papers/general/braktooth.pdf

#### Github
- https://github.com/JeffroMF/awesome-bluetooth-security321
- https://github.com/engn33r/awesome-bluetooth-security