CVE-2025-66255
high-risk
Published 2025-11-26
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
Do I need to act?
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0.25% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10
Critical
NETWORK
/ LOW complexity
Affected Products (20)
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
Affected Vendors
References (2)
53
/ 100
high-risk
Severity
32/34 · Critical
Exploitability
1/34 · Minimal
Exposure
20/34 · Moderate