Unauthenticated Arbitrary File Read via Null Byte Injection_CVE-2025-66263

{
    "lastseen": "",
    "description": "Unauthenticated Arbitrary File Read via Null Byte Injection in DB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter versions 30, 50, 100, 300, 500, 1000, 2000, 3000, 3500, 6000, 7000 allows an attacker to perform Null byte injection in download_setting.php allows reading arbitrary files.\nThe `/var/tdf/download_setting.php` endpoint constructs file paths by concatenating user-controlled `$_GET['filename']` with a forced `.tgz` extension. Running on PHP 5.3.2 (pre-5.3.4), the application is vulnerable to null byte injection (%00), allowing attackers to bypass the extension restriction and traverse paths. By requesting `filename=../../../../etc/passwd%00`, the underlying C functions treat the null byte as a string terminator, ignoring the appended `.tgz` and enabling unauthenticated arbitrary file disclosure of any file readable by the web server user.",
    "published": "2025-11-26T00:52:24.390Z",
    "modified": "2025-11-26T00:52:24.390Z",
    "type": "cve",
    "title": "Unauthenticated Arbitrary File Read via Null Byte Injection",
    "source": "Gridware",
    "references": "https://www.abdulmhsblog.com/posts/webfmvulns/",
    "id": "CVE-2025-66263",
    "bulletinFamily": "",
    "cwe": [
        "CWE-158"
    ],
    "cvelist": null,
    "sourceData": "DB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter 30\nDB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter 50\nDB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter 100\nDB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter 300\nDB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter 500\nDB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter 1000\nDB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter 2000\nDB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter 3000\nDB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter 3500\nDB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter 6000\nDB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter 7000",
    "sourceHref": "",
    "cvss": {
        "score": 8.9,
        "severity": "HIGH",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N",
        "version": "4.0"
    },
    "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": "Mozart FM Transmitter",
    "version": "30, 50, 100, 300, 500, 1000, 2000, 3000, 3500, 6000, 7000",
    "vendor": "DB Electronica Telecomunicazioni S.p.A.",
    "ai_description": "Unauthenticated arbitrary file read via null byte injection in Mozart FM Transmitter",
    "ai_severity": "High",
    "ai_vendor": "DB Electronica Telecomunicazioni S.p.A.",
    "ai_product": "Mozart FM Transmitter",
    "ai_version": "30, 50, 100, 300, 500, 1000, 2000, 3000, 3500, 6000, 7000",
    "ai_score": 8.9
}