CVE-2025-15645 — Denial of Service
CVE-2025-15645 — 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
What This Means For You
- If your environment is affected by CWE-1284, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2025-15645 updates and patches.
Related ATT&CK Techniques
🛡️ Detection Rules
1 rule · 6 SIEM formats1 detection rule auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
CVE-2025-15645 - MCU Firmware Update Denial of Service Attempt
title: CVE-2025-15645 - MCU Firmware Update Denial of Service Attempt
id: scw-2026-05-19-ai-1
status: experimental
level: critical
description: |
Detects attempts to exploit CVE-2025-15645 by monitoring processes related to Ledger Live firmware updates that include the '--reset_handler' argument with a hexadecimal address, indicating a potential attempt to trigger the denial of service vulnerability by manipulating the firmware flashing process.
author: SCW Feed Engine (AI-generated)
date: 2026-05-19
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2025-15645/
tags:
- attack.impact
- attack.t1499
logsource:
category: process_creation
detection:
selection:
Image|startswith:
- 'C:\\Program Files\\Ledger\\Ledger Live\\app-\\'
CommandLine|contains:
- 'update_firmware'
CommandLine|contains:
- '--reset_handler'
CommandLine|contains:
- '0x'
condition: selection
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2025-15645 | vulnerability | CVE-2025-15645 |
| CWE-1284 | weakness | CWE-1284 |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | May 20, 2026 at 01:16 UTC |
This content was curated and summarized by Shimi's Cyber World for informational purposes. It is not copied or republished in full. All intellectual property rights remain with the original author and source.
Believe this infringes your rights? Submit a takedown request.
Related coverage
CVE-2026-20240 — Denial of Service
CVE-2026-20240 — In Splunk Enterprise versions below 10.2.2, 10.0.5, 9.4.11, and 9.3.12, and Splunk Cloud Platform versions below 10.4.2603.1, 10.3.2512.9, 10.2.2510.11, 10.1.2507.21, 10.0.2503.13, and 9.3.2411.129,...
Splunk Enterprise, Cloud Vulnerability Exposes Session Cookies, Sensitive Data
CVE-2026-20239 — In Splunk Enterprise versions below 10.2.2 and 10.0.5, and Splunk Cloud Platform versions below 10.3.2512.8, 10.2.2510.11, 10.1.2507.21, and 10.0.2503.13, a user with a...
CVE-2026-20238 — In Splunk AI Toolkit versions below 5.7.3, a low-privileged
CVE-2026-20238 — In Splunk AI Toolkit versions below 5.7.3, a low-privileged user that does not hold the 'admin' or 'power' roles could access confidential data...