Denial of Service Vulnerability in Espressif ESP-IDF Bluetooth Classic Implementation
CVE-2021-28135

6.5MEDIUM

Key Information:

Vendor: Espressif
Status: Esp-idf
Vendor: CVE Published:; 7 September 2021

What is CVE-2021-28135?

The Bluetooth Classic component in Espressif's ESP-IDF framework prior to version 4.4 is susceptible to a denial of service attack. This vulnerability allows an attacker within radio range to exploit the system by sending a continuous stream of unsolicited Link Management Protocol (LMP) responses. When the target device is overwhelmed with LMP Feature Response data, it may result in a crash, effectively disrupting the intended functionality of the ESP32 chipset.

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