CVE-2021-31786

MediumCVSS 6.5/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-667

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://dl.packetstormsecurity.net/papers/general/braktooth.pdfTechnical Description, Third Party Advisory
https://launchstudio.bluetooth.com/ListingDetails/76427Third Party Advisory
https://www.actions-semi.com/index.php?id=3581&siteId=4Broken Link, Vendor Advisory
https://dl.packetstormsecurity.net/papers/general/braktooth.pdfTechnical Description, Third Party Advisory
https://launchstudio.bluetooth.com/ListingDetails/76427Third Party Advisory
https://www.actions-semi.com/index.php?id=3581&siteId=4Broken Link, Vendor Advisory

Timeline

Published: Sep 7, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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