CVE-2021-34147

Katalog CVE

CVSS 6.5 · Medium EPSS 0,58%

Kerentanan pada cypress wireless internet connectivity for embedded devices. Skor CVSS 3.1 6.5 (Medium) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

7 September 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

6.5 (Medium), sumber NVD
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator

EPSS (30 hari)

0,58% peluang dieksploitasi; lebih tinggi dari 46,2% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://www.cypress.com/documentation/datasheets/cyw20735b1-single-chip-bluetooth-transceiver-wireless-input-d... advisory vendor
• https://dl.packetstormsecurity.net/papers/general/braktooth.pdf deskripsi teknis · advisory pihak ketiga