CVE-2025-66256 CRITICAL

CVE-2025-66256: Unauthenticated Arbitrary File Upload (patch_contents.php)

Vendor Db Electronica Telecomunicazioni S.p.a.
Product Mozart FM Transmitter
Weakness CWE-434 · Unrestricted file upload
Published November 26, 2025
Last update December 3, 2025

CVSS base score

9.9/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:H/SI:N/SA:N

What the vulnerability does

01Description

Unauthenticated Arbitrary File Upload (patch_contents.php) 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 Unrestricted file upload in patch_contents.php allows uploading malicious files. The `/var/tdf/patch_contents.php` endpoint allows unauthenticated arbitrary file uploads without file type validation, MIME checking, or size restrictions beyond 16MB, enabling attackers to upload malicious files.

Key dates

02Disclosure timeline

November 26, 2025 CVE published
December 3, 2025 Record updated