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Vulnerability record · CVE-2025-66263 · published 26 November 2025

CVE-2025-66263: Dbbroadcast mozart next 3000 firmware vulnerability

Dbbroadcast · Mozart Next 3000 Firmware

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.

8.9 CVSS 4.0 High EPSS 0.39% · top 69.2% CWE-158 · CWE-158
8.9CVSS 4.0 base score
0.39%EPSS exploitation probability, 30 days
NoNot in CISA KEV
22Affected product versions listed by NVD
1References, 1 tagged exploit
17 Jun 2026Last modified by NVD

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.

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

22 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.abdulmhsblog.com/posts/webfmvulns/ ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.9CVE-2025-66261Dbbroadcast mozart next 100 firmware os command injection vulnerabilityUnauthenticated OS Command Injection (restore_settings.php) in DB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter versions 30, 50, 100, 30…EPSS 2.3%9.9CVE-2025-66253Dbbroadcast mozart next 100 firmware os command injection vulnerabilityUnauthenticated OS Command Injection (start_upgrade.php) in DB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter versions 30, 50, 100, 300, …EPSS 2.3%9.9CVE-2025-66255Dbbroadcast mozart next 3000 firmware insufficient verification of data authenticity vulnerabilityUnauthenticated Arbitrary File Upload (upgrade_contents.php) in DB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter versions 30, 50, 100, 3…EPSS 0.38%9.9CVE-2025-66256Dbbroadcast mozart next 100 firmware unrestricted file upload vulnerabilityUnauthenticated Arbitrary File Upload (patch_contents.php) in DB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter versions 30, 50, 100, 300…EPSS 0.44%9.8CVE-2025-63228Dbbroadcast mozart next 100 firmware unrestricted file upload vulnerabilityThe Mozart FM Transmitter web management interface on version WEBMOZZI-00287, contains an unauthenticated file upload vulnerability in the /upload_fi…EPSS 0.76%9.3CVE-2025-66259Dbbroadcast mozart next 100 firmware improper input validation vulnerabilityAuthenticated Root Remote Code Execution via improrer user input filtering in DB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter versions …EPSS 0.66%9.3CVE-2025-66262Dbbroadcast mozart next 100 firmware path traversal vulnerabilityArbitrary File Overwrite via Tar Extraction Path Traversal in DB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter versions 30, 50, 100, 300…EPSS 1.4%9.2CVE-2025-66257Dbbroadcast mozart next 100 firmware vulnerabilityUnauthenticated Arbitrary File Deletion (patch_contents.php) in DB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter versions 30, 50, 100, 3…EPSS 0.38%

Source: NIST National Vulnerability Database (record CVE-2025-66263), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.