CVE-2025-66263
Full vulnerability record from the local CVENow database.
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. The `/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.
Severity
HIGH
CVSS score
8.9
(v4.0)
Vulnerability status
Analyzed
Source identifier
b7efe717-a805-47cf-8e9a-921fca0ce0ce
Published
2025-11-26 01:16:09.880000
Last modified
2026-10-19 13:10:00.110000
View original CVE JSON
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"references": [
{
"url": "https://www.abdulmhsblog.com/posts/webfmvulns/",
"source": "b7efe717-a805-47cf-8e9a-921fca0ce0ce",
"tags": [
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}