CVE-2020-13595

6.5 mediumEPSS 0.9%

Medium (6.5) in espressif esp-idf. 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.

Severity

CVSS 3.1

6.5 medium

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

EPSS: 0.9% chance of exploitation in the next 30 days; higher than 58% of CVEs (scores of 2026-10-31)
CWE: CWE-617
Published: 2020-08-31
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

espressif:esp-idf

References

https://asset-group.github.io/cves.html
https://asset-group.github.io/disclosures/sweyntooth/
https://github.com/espressif/esp32-bt-lib
https://asset-group.github.io/cves.html
https://asset-group.github.io/disclosures/sweyntooth/

Check your stack JSON