CVE-2020-13594

MEDIUM

Espressif ESP-IDF < 4.2 - Denial of Service via BLE Connection Request Channel Map

Title source: llm
STIX 2.1

Description

The Bluetooth Low Energy (BLE) controller implementation in Espressif ESP-IDF 4.2 and earlier (for ESP32 devices) does not properly restrict the channel map field of the connection request packet on reception, allowing attackers in radio range to cause a denial of service (crash) via a crafted packet.

References (3)

Core 3
Core References
Third Party Advisory x_refsource_misc
https://asset-group.github.io/disclosures/sweyntooth/
Third Party Advisory x_refsource_misc
https://asset-group.github.io/cves.html

Scores

CVSS v3 6.5
EPSS 0.0076
EPSS Percentile 50.6%
Attack Vector ADJACENT_NETWORK
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-20
Status published
Products (1)
espressif/esp-idf < 4.2
Published Aug 31, 2020
Tracked Since Feb 18, 2026