Description
Espressif ESP32 chips allow 29 hidden HCI commands, such as 0xFC02 (Write memory).
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Espressif ESP32
Default version status: unknown
2025-03-06affected
References
- https://github.com/TarlogicSecurity/Talks/blob/main/2025_RootedCon_BluetoothTools.pdf ↗
- https://x.com/pascal_gujer/status/1898442439704158276 ↗
- https://www.tarlogic.com/news/backdoor-esp32-chip-infect-ot-devices/ ↗
- https://www.bleepingcomputer.com/news/security/undocumented-backdoor-found-in-bluetooth-chip-used-by-a-billion-devices/ ↗
- https://reg.rootedcon.com/cfp/schedule/talk/5 ↗
- https://flyingpenguin.com/?p=67838 ↗
- https://github.com/em0gi/CVE-2025-27840 ↗
- https://github.com/orgs/espruino/discussions/7699 ↗
- https://www.bleepingcomputer.com/news/security/undocumented-commands-found-in-bluetooth-chip-used-by-a-billion-devices/ ↗
- https://darkmentor.com/blog/esp32_non-backdoor/ ↗
- https://news.ycombinator.com/item?id=43308740 ↗
- https://news.ycombinator.com/item?id=43301369 ↗
- https://github.com/esphome/esphome/discussions/8382 ↗
- https://cheriot.org/auditing/backdoor/2025/03/09/no-esp32-style-backdoor.html ↗
- https://www.espressif.com/en/news/Response_ESP32_Bluetooth ↗