VULNERABILITY INTELLIGENCE
CVE-2025-15645
CVSS score4.6 MEDIUM
EPSS probability0.21%
CISA KEVNot currently listed
Published2026-05-19
Last modified2026-07-24
CVSS vectorCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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.
Weakness classification
- disclosure@vulncheck.com: CWE-1284