CVE-2021-34149

MediumCVSS 6.5/10Last modified Jun 17, 2026

Description

The Bluetooth Classic implementation on the Texas Instruments CC256XCQFN-EM does not properly handle the reception of continuous LMP_AU_Rand packets, allowing attackers in radio range to trigger a denial of service (deadlock) of the device by flooding it with LMP_AU_Rand packets after the paging procedure.

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

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://www.ti.com/product/CC2564CProduct, Vendor Advisory
https://www.ti.com/tool/CC256XC-BT-SP#primary-swProduct, Vendor Advisory
https://dl.packetstormsecurity.net/papers/general/braktooth.pdfTechnical Description, Third Party Advisory
https://www.ti.com/product/CC2564CProduct, Vendor Advisory
https://www.ti.com/tool/CC256XC-BT-SP#primary-swProduct, Vendor Advisory

Timeline

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

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