CVE-2020-13594

low-risk

Published 2020-08-31

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.

Do I need to act?

0.15% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 6.5/10 Medium

ADJACENT_NETWORK / LOW complexity

Affected Products (1)

Esp-Idf

Affected Vendors

Espressif

References (6)

Third Party Advisory https://asset-group.github.io/cves.html

Third Party Advisory https://asset-group.github.io/disclosures/sweyntooth/

Third Party Advisory https://github.com/espressif/esp32-bt-lib

Third Party Advisory https://asset-group.github.io/cves.html

Third Party Advisory https://asset-group.github.io/disclosures/sweyntooth/

Third Party Advisory https://github.com/espressif/esp32-bt-lib

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low-risk

Severity 21/34 · High

Exploitability 1/34 · Minimal

Exposure 5/34 · Minimal