CVE-2020-13595: Espressif Esp-Idf

Medium severity, CVSS 6.5. EPSS: 0.9% chance of exploitation in the next 30 days.

The Bluetooth Low Energy (BLE) controller implementation in Espressif ESP-IDF 4.0 through 4.2 (for ESP32 devices) returns the wrong number of completed BLE packets and triggers a reachable assertion on the host stack when receiving a packet with an MIC failure. An attacker within radio range can silently trigger the assertion (which disables the target's BLE stack) by sending a crafted sequence of BLE packets.

Affected products

• Espressif Esp-Idf: from 4.0.0, up to and including 4.2

Published 2020-08-31. Last modified 2026-06-17.