CVE-2021-34147

MediumCVSS 6.5/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected software

No affected versions have been published.

Timeline

Published
Sep 7, 2021
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2021

CVE-2021-341486.5The Bluetooth Classic implementation in the Cypress WICED BT stack through 2.9.0 for CYW20735B1 devices does not properly handle the receptiCVE-2021-341496.5The Bluetooth Classic implementation on the Texas Instruments CC256XCQFN-EM does not properly handle the reception of continuous LMP_AU_RandCVE-2021-341506.5The Bluetooth Classic implementation on Bluetrum AB5301A devices with unknown firmware versions does not properly handle the reception of ovCVE-2021-34166.0A potential stack overflow via infinite loop issue was found in various NIC emulators of QEMU in versions up to and including 5.2.0. The issCVE-2021-341648.8Permissions vulnerability in LIZHIFAKA v.2.2.0 allows authenticated attacker to execute arbitrary commands via the set password function in CVE-2021-341659.8A SQL Injection vulnerability in Sourcecodester Basic Shopping Cart 1.0 allows a remote attacker to Bypass Authentication and become Admin.CVE-2021-341669.8A SQL INJECTION vulnerability in Sourcecodester Simple Food Website 1.0 allows a remote attacker to Bypass Authentication and become Admin.CVE-2021-341678.8Cross Site Request Forgery (CSRF) vulnerability in taoCMS 3.0.2 allows remote attackers to gain escalated privileges via taocms/admin/admin.CVE-2021-34174.9An internal product security audit of LXCO, prior to version 1.2.2, discovered that credentials for Lenovo XClarity Administrator (LXCA), ifCVE-2021-341709.8Bandai Namco FromSoftware Dark Souls III allows remote attackers to execute arbitrary code.CVE-2021-341737.5An attacker can cause a Denial of Service and kernel panic in v4.2 and earlier versions of Espressif esp32 via a malformed beacon csa frame.CVE-2021-341744.6A vulnerability exists in Broadcom BCM4352 and BCM43684 chips. Any wireless router using BCM4352 and BCM43684 will be affected, such as ASUS
CVE-2021-34147: Medium severity, CVSS 6.5 | Vulnix