CVE-2025-15645

Ledger Nano X, Flex, Stax MCU Firmware Update Denial of Service

CVSS 5.1 MEDIUMEPSS 0.2%CWE-1284

Vexday Risk Score

13Baixo

Decisão SSVC (CISA)

Track

Sem sinal de exploração → monitorar

CVSS 5.1EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Ciclo de vida

19 mai 2026Publicada no NVD

Recomendação: Monitorar — sem sinal de exploração no momento.

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:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Produtos afetados

Ledger · Ledger Flex Ledger · Ledger Nano X Ledger · Ledger Stax

Quer saber se a sua infraestrutura está exposta a isto?

Falar com a TrueHacking →

Referências

https://donjon.ledger.com/lsb/021/https://www.vulncheck.com/advisories/ledger-nano-x-flex-stax-mcu-firmware-update-denial-of-service