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CVE-2025-66255

Published: Nov 26, 2025Updated: Dec 3, 2025 Sources: CVE List NVDCWE-345
NVD MITRE
9.8CVSSCRITICAL
EPSS Score
0.3%
Top 76.6%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
No Fix Available

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

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-345CWE-434

Affected Products

mozart next 3000 firmwaredbbroadcastICS / OT / IoT
mozart next 3500 firmwaredbbroadcastICS / OT / IoT
mozart next 50 firmwaredbbroadcastICS / OT / IoT
mozart next 500 firmwaredbbroadcastICS / OT / IoT
mozart next 6000 firmwaredbbroadcastICS / OT / IoT
dbbroadcastcommercialICS / OT / IoTaka dbbroadcast, mozart dds
and 18 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details

MITRE ATT&CK

4 techniques
Collection
Command and Control
Initial Access
Persistence
View detailed technique mapping

References

https://www.abdulmhsblog.com/posts/webfmvulns/
abdulmhsblog.com

Timeline

Published
Nov 26, 2025
Last Updated
Dec 3, 2025

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