Description

Espressif ESP32 chips allow 29 hidden HCI commands, such as 0xFC02 (Write memory).

INFO

Published Date :

2025-03-08T00:00:00.000Z

Last Modified :

2025-05-12T15:33:14.134Z

Source :

mitre
AFFECTED PRODUCTS

The following products are affected by CVE-2025-27840 vulnerability.

Vendors Products
Espressif
  • Esp32
  • Esp32 Firmware
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-27840.

URL Resource
https://cheriot.org/auditing/backdoor/2025/03/09/no-esp32-style-backdoor.html cve-icon cve-icon
https://darkmentor.com/blog/esp32_non-backdoor/ cve-icon cve-icon
https://flyingpenguin.com/?p=67838 cve-icon cve-icon
https://github.com/TarlogicSecurity/Talks/blob/main/2025_RootedCon_BluetoothTools.pdf cve-icon cve-icon
https://github.com/em0gi/CVE-2025-27840 cve-icon cve-icon
https://github.com/esphome/esphome/discussions/8382 cve-icon cve-icon
https://github.com/orgs/espruino/discussions/7699 cve-icon cve-icon
https://news.ycombinator.com/item?id=43301369 cve-icon cve-icon
https://news.ycombinator.com/item?id=43308740 cve-icon cve-icon
https://reg.rootedcon.com/cfp/schedule/talk/5 cve-icon cve-icon
https://www.bleepingcomputer.com/news/security/undocumented-backdoor-found-in-bluetooth-chip-used-by-a-billion-devices/ cve-icon cve-icon
https://www.bleepingcomputer.com/news/security/undocumented-commands-found-in-bluetooth-chip-used-by-a-billion-devices/ cve-icon cve-icon
https://www.espressif.com/en/news/Response_ESP32_Bluetooth cve-icon cve-icon
https://www.tarlogic.com/news/backdoor-esp32-chip-infect-ot-devices/ cve-icon cve-icon
https://x.com/pascal_gujer/status/1898442439704158276 cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
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