1. Home
  2. CVE Database
  3. CVE-2025-66263
HIGH · 7.5

CVE-2025-66263

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 a...

Vulnerability 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 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE

Affected Products

VendorProductVersions
DbbroadcastMozart Next 3000 Firmware-
DbbroadcastMozart Next 3000-
DbbroadcastMozart Next 3500 Firmware-
DbbroadcastMozart Next 3500-
DbbroadcastMozart Next 50 Firmware-
DbbroadcastMozart Next 50-
DbbroadcastMozart Next 500 Firmware-
DbbroadcastMozart Next 500-
DbbroadcastMozart Next 6000 Firmware-
DbbroadcastMozart Next 6000-
DbbroadcastMozart Next 7000 Firmware-
DbbroadcastMozart Next 7000-
DbbroadcastMozart Next 100 Firmware-
DbbroadcastMozart Next 100-
DbbroadcastMozart Next 1000 Firmware-
DbbroadcastMozart Next 1000-
DbbroadcastMozart Next 2000 Firmware-
DbbroadcastMozart Next 2000-
DbbroadcastMozart Next 30 Firmware-
DbbroadcastMozart Next 30-

Related Weaknesses (CWE)

CWE-158

References

FAQ

What is CVE-2025-66263?

CVE-2025-66263 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 a...

How severe is CVE-2025-66263?

CVE-2025-66263 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-66263?

Check the references section above for vendor advisories and patch information. Affected products include: Dbbroadcast Mozart Next 3000 Firmware, Dbbroadcast Mozart Next 3000, Dbbroadcast Mozart Next 3500 Firmware, Dbbroadcast Mozart Next 3500, Dbbroadcast Mozart Next 50 Firmware.