Medium severity5.3NVD Advisory· Published Sep 7, 2021· Updated Jun 17, 2026
CVE-2021-34145
CVE-2021-34145
Description
The Bluetooth Classic implementation in the Cypress WICED BT stack through 2.9.0 for CYW20735B1 devices does not properly handle the reception of LMP_max_slot with an invalid Baseband packet type (and LT_ADDRESS and LT_ADDR) after completion of the LMP setup procedure, allowing attackers in radio range to trigger a denial of service (firmware crash) via a crafted LMP packet.
Affected products
3- cpe:2.3:o:cypress:wireless_internet_connectivity_for_embedded_devices:*:*:*:*:*:*:*:*Range: <=2.9.0
- Cypress/WICED BT stack for CYW20735B1 devicesdescription
Patches
Vulnerability mechanics
References
2News mentions
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