Description
Ledger Nano X, Flex, and Stax devices contain a denial of service vulnerability in the MCU firmware update process due to missing validation of the reset_handler parameter during firmware flashing. An attacker can provide a crafted reset_handler address pointing to invalid memory or attacker-controlled code to cause the device to enter an unrecoverable fault state during boot, resulting in permanent loss of operability.
CVSS 4.6EPSS 0.21%Risk 0.47
View source- Published
- 2026-05-19 22:16:36
- Affected versions
- unknown
- Type
- Firmware
- Last modified
- 2026-07-24 09:10:00
- Vector
- CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H