cvedb.io
CVE-2021-34147
MEDIUM · CVSS 6.5
EPSS exploitation probability: 0%
Published 2021-09-07T07:15:07.373 · Last modified 2026-06-17T03:55:30.860

Summary

The Bluetooth Classic implementation in the Cypress WICED BT stack through 2.9.0 for CYW20735B1 does not properly handle the reception of a malformed LMP timing accuracy response followed by multiple reconnections to the link slave, allowing attackers to exhaust device BT resources and eventually trigger a crash via multiple attempts of sending a crafted LMP timing accuracy response followed by a sudden reconnection with a random BDAddress.

Affected products

cypress — wireless_internet_connectivity_for_embedded_devices

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.