CVE-2025-66255

CriticalCVSS 9.8/10Last modified Oct 18, 2026

Description

Unauthenticated Arbitrary File Upload (upgrade_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 Missing signature validation allows uploading malicious firmware packages.  The firmware upgrade endpoint in `upgrade_contents.php` accepts arbitrary file uploads without validating file headers, cryptographic signatures, or enforcing .tgz format requirements, allowing malicious firmware injection. This endpoint also subsequently provides ways for arbitrary file uploads and subsequent remote code execution

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-345CWE-434

Affected software

No affected versions have been published.

Timeline

Published
Nov 26, 2025
Last modified
Oct 18, 2026
NVD status
Analyzed

Related CVEs from 2025

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CVE-2025-66255: Critical severity, CVSS 9.8 | Vulnix