Is CVE-2025-15645 actively exploited?

No active exploitation of CVE-2025-15645 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2025-15645 be exploited remotely?

No. CVE-2025-15645 requires physical access to exploit.

What is the CVSS score of CVE-2025-15645?

CVE-2025-15645 has a CVSS score of 4.6 (MEDIUM).

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MEDIUM

CVE-2025-15645

CWE-1284Published: May 19, 2026· Updated: May 20, 2026

4.6

CVSS v3.1

EPSS:0.02%probability of exploitation in 30 daysPercentile:6.7th

Official 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.

NVD Source

Technical Analysis

CVE-2025-15645 requires local access, meaning attackers must already have a foothold on the target system.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 4.6.