What’s Vulnerable › Vulnerabilities

CVE-2021-34149

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-09-07 · updated 2026-06-17

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.

Affected products

• Ti Cc256Xcqfn-Em Firmware: all versions

References

• https://dl.packetstormsecurity.net/papers/general/braktooth.pdf
• https://www.ti.com/product/CC2564C
• https://www.ti.com/tool/CC256XC-BT-SP#primary-sw
• https://dl.packetstormsecurity.net/papers/general/braktooth.pdf
• https://www.ti.com/product/CC2564C
• https://www.ti.com/tool/CC256XC-BT-SP#primary-sw

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