CVE-2021-34149
Last modified
CVE-2021-34149 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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.. EPSS estimates a 0.49% chance of exploitation in the next 30 days.
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/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Ti | Cc256xcqfn-Em Firmware | All versions |
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
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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