CVE-2021-34149: Ti CC256XCQFN-Em Firmware

Medium severity, CVSS 6.5. EPSS: 0.5% chance of exploitation in the next 30 days.

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.

Affected products

• Ti CC256XCQFN-Em Firmware: affected versions not specified

Published 2021-09-07. Last modified 2026-06-17.