Medium severity6.5NVD Advisory· Published Nov 30, 2021· Updated Jun 17, 2026
CVE-2021-31787
CVE-2021-31787
Description
The Bluetooth Classic implementation on Actions ATS2815 chipsets does not properly handle the reception of continuous unsolicited LMP responses, allowing attackers in radio range to trigger a denial of service and shutdown of a device by flooding the target device with LMP_features_res packets.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
7- cpe:2.3:o:actions-semi:ats2819p_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:actions-semi:ats2815_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:actions-semi:ats2819_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:actions-semi:ats2819s_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:actions-semi:ats2819t_firmware:-:*:*:*:*:*:*:*
- Actions/ATS2815 chipsetsdescription
Patches
Vulnerability mechanics
References
3- launchstudio.bluetooth.com/ListingDetails/76427nvdThird Party Advisory
- www.actions-semi.com/index.phpnvdVendor Advisory
- dl.packetstormsecurity.net/papers/general/braktooth.pdfnvdBroken Link
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