Ledger Nano X, Flex, Stax MCU Firmware Update Denial of Service_CVE-2025-15645

{
    "lastseen": "",
    "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.",
    "published": "2026-05-19T21:41:50.473Z",
    "modified": "2026-05-19T21:41:50.473Z",
    "type": "cve",
    "title": "Ledger Nano X, Flex, Stax MCU Firmware Update Denial of Service",
    "source": "VulnCheck",
    "references": "https://www.ledger.com/security-bulletin\nhttps://www.vulncheck.com/advisories/ledger-nano-x-flex-stax-mcu-firmware-update-denial-of-service",
    "id": "CVE-2025-15645",
    "bulletinFamily": "",
    "cwe": [
        "CWE-1284"
    ],
    "cvelist": null,
    "sourceData": "Ledger Ledger Nano X 0\nLedger Ledger Flex 0\nLedger Ledger Stax 0",
    "sourceHref": "",
    "cvss": {
        "score": 4.6,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Ledger Nano X",
    "version": "0",
    "vendor": "Ledger",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}