CVE-2021-34146

MEDIUM
6.5
CVSS Score
Published: September 7, 2021 at 06:18 AM UTC
Updated: June 17, 2026 at 03:55 AM UTC
4 products affected across 1 vendorCYW20735B1 FirmwareCyw920735q60evb 01 FirmwareCyw20735B1

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.6%

Description

The Bluetooth Classic implementation in the Cypress CYW920735Q60EVB does not properly handle the reception of continuous unsolicited LMP responses, allowing attackers in radio range to trigger a denial of service and restart (crash) of the device by flooding it with LMP_AU_Rand packets after the paging procedure.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

All versions
cypress-cyw20735b1 (same device)
All versions
cypress-cyw920735q60evb-01 (same device)
All versions
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

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