CVE-2025-27840

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

Configuration 1 (hide)

AND
cpe:2.3:o:espressif:esp32_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:espressif:esp32:-:*:*:*:*:*:*:*

History

12 Mar 2025, 14:58

Type Values Removed Values Added
CWE NVD-CWE-Other
First Time Espressif esp32 Firmware
Espressif esp32
Espressif
References () https://cheriot.org/auditing/backdoor/2025/03/09/no-esp32-style-backdoor.html - () https://cheriot.org/auditing/backdoor/2025/03/09/no-esp32-style-backdoor.html - Third Party Advisory, Technical Description
References () https://darkmentor.com/blog/esp32_non-backdoor/ - () https://darkmentor.com/blog/esp32_non-backdoor/ - Exploit, Third Party Advisory, Technical Description
References () https://flyingpenguin.com/?p=67838 - () https://flyingpenguin.com/?p=67838 - Third Party Advisory, Technical Description
References () https://github.com/TarlogicSecurity/Talks/blob/main/2025_RootedCon_BluetoothTools.pdf - () https://github.com/TarlogicSecurity/Talks/blob/main/2025_RootedCon_BluetoothTools.pdf - Third Party Advisory
References () https://github.com/em0gi/CVE-2025-27840 - () https://github.com/em0gi/CVE-2025-27840 - Product
References () https://github.com/esphome/esphome/discussions/8382 - () https://github.com/esphome/esphome/discussions/8382 - Issue Tracking
References () https://github.com/orgs/espruino/discussions/7699 - () https://github.com/orgs/espruino/discussions/7699 - Issue Tracking
References () https://news.ycombinator.com/item?id=43301369 - () https://news.ycombinator.com/item?id=43301369 - Issue Tracking
References () https://news.ycombinator.com/item?id=43308740 - () https://news.ycombinator.com/item?id=43308740 - Issue Tracking
References () https://reg.rootedcon.com/cfp/schedule/talk/5 - () https://reg.rootedcon.com/cfp/schedule/talk/5 - Third Party Advisory
References () https://www.bleepingcomputer.com/news/security/undocumented-backdoor-found-in-bluetooth-chip-used-by-a-billion-devices/ - () https://www.bleepingcomputer.com/news/security/undocumented-backdoor-found-in-bluetooth-chip-used-by-a-billion-devices/ - Exploit, Press/Media Coverage
References () https://www.bleepingcomputer.com/news/security/undocumented-commands-found-in-bluetooth-chip-used-by-a-billion-devices/ - () https://www.bleepingcomputer.com/news/security/undocumented-commands-found-in-bluetooth-chip-used-by-a-billion-devices/ - Exploit, Press/Media Coverage
References () https://www.espressif.com/en/news/Response_ESP32_Bluetooth - () https://www.espressif.com/en/news/Response_ESP32_Bluetooth - Press/Media Coverage
References () https://www.tarlogic.com/news/backdoor-esp32-chip-infect-ot-devices/ - () https://www.tarlogic.com/news/backdoor-esp32-chip-infect-ot-devices/ - Third Party Advisory
References () https://x.com/pascal_gujer/status/1898442439704158276 - () https://x.com/pascal_gujer/status/1898442439704158276 - Third Party Advisory
CPE cpe:2.3:o:espressif:esp32_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:espressif:esp32:-:*:*:*:*:*:*:*

11 Mar 2025, 17:16

Type Values Removed Values Added
Summary
  • (es) Los chips Espressif ESP32 permiten 29 comandos HCI ocultos, como 0xFC02 (Escribir memoria).
References
  • () https://www.espressif.com/en/news/Response_ESP32_Bluetooth -

10 Mar 2025, 14:15

Type Values Removed Values Added
References
  • () https://cheriot.org/auditing/backdoor/2025/03/09/no-esp32-style-backdoor.html -
  • () https://darkmentor.com/blog/esp32_non-backdoor/ -
  • () https://github.com/esphome/esphome/discussions/8382 -
  • () https://news.ycombinator.com/item?id=43301369 -
  • () https://news.ycombinator.com/item?id=43308740 -

10 Mar 2025, 00:15

Type Values Removed Values Added
References
  • () 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/ -

09 Mar 2025, 23:15

Type Values Removed Values Added
References
  • () https://flyingpenguin.com/?p=67838 -

08 Mar 2025, 21:15

Type Values Removed Values Added
CVSS v2 : unknown
v3 : 7.1
v2 : unknown
v3 : 6.8

08 Mar 2025, 20:15

Type Values Removed Values Added
New CVE

Information

Published : 2025-03-08 20:15

Updated : 2025-03-12 14:58


NVD link : CVE-2025-27840

Mitre link : CVE-2025-27840

CVE.ORG link : CVE-2025-27840


JSON object : View

Products Affected

espressif

  • esp32_firmware
  • esp32
CWE
CWE-912

Hidden Functionality

NVD-CWE-Other