CVE Catalog

CVE-2025-66263

HighCVSS 7.5
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.39%

32th percentile - higher than 32% of all known CVEs

Summary

In DB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter versions 30 through 7000, the /var/tdf/download_setting.php endpoint builds file paths from $_GET['filename'] plus a forced .tgz extension. On PHP 5.3.2 (pre-5.3.4), null byte injection (%00) bypasses the extension restriction and allows unauthenticated arbitrary file disclosure of any file readable by the web server user.

Risk Assessment

An attacker can read sensitive system files such as /etc/passwd without authentication, which may facilitate further attacks.

Recommendation

Restrict network access to the transmitter management interface and upgrade PHP to 5.3.4 or later; consider disabling the vulnerable endpoint until patched.

Other vulnerabilities in Mozart FM Transmitter

See all
Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS