CVE-2025-66255

CRITICAL
2025-11-26 b7efe717-a805-47cf-8e9a-921fca0ce0ce
9.9
CVSS 4.0
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CVSS Vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/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:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

3
Analysis Generated
Mar 28, 2026 - 19:24 vuln.today
PoC Detected
Dec 03, 2025 - 16:48 vuln.today
Public exploit code
CVE Published
Nov 26, 2025 - 01:16 nvd
CRITICAL 9.9

Tags

File Upload PHP RCE Mozart Next 3000 Firmware Mozart Next 3500 Firmware Mozart Next 50 Firmware Mozart Next 500 Firmware Mozart Next 6000 Firmware Mozart Next 7000 Firmware Mozart Next 100 Firmware Mozart Next 1000 Firmware Mozart Next 2000 Firmware Mozart Next 30 Firmware Mozart Next 300 Firmware Mozart Dds Next 30 Firmware Mozart Dds Next 50 Firmware Mozart Dds Next 100 Firmware Mozart Dds Next 300 Firmware Mozart Dds Next 500 Firmware Mozart Dds Next 1000 Firmware Mozart Dds Next 2000 Firmware Mozart Dds Next 3000 Firmware Mozart Dds Next 3500 Firmware Mozart Dds Next 6000 Firmware Mozart Dds Next 7000 Firmware

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

Analysis

Unauthenticated Arbitrary File Upload (upgrade_contents.php) in DB Electronica Telecomunicazioni S.p.A. Rated critical severity (CVSS 9.9), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical Context

This vulnerability is classified under CWE-345. 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 Affected products include: Dbbroadcast Mozart Next 3000 Firmware, Dbbroadcast Mozart Next 3500 Firmware, Dbbroadcast Mozart Next 50 Firmware, Dbbroadcast Mozart Next 500 Firmware, Dbbroadcast Mozart Next 6000 Firmware.

Affected Products

Dbbroadcast Mozart Next 3000 Firmware, Dbbroadcast Mozart Next 3500 Firmware, Dbbroadcast Mozart Next 50 Firmware, Dbbroadcast Mozart Next 500 Firmware, Dbbroadcast Mozart Next 6000 Firmware.

Remediation

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Priority Score

70
Low Medium High Critical
KEV: 0
EPSS: +0.3
CVSS: +50
POC: +20

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CVE-2025-66255 vulnerability details – vuln.today
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