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CVE-2025-66255

CRITICAL Exploitation: PoC
9.9
CVSS 4.0
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

Metadata

CVE ID
CVE-2025-66255
State
PUBLISHED
Assigner
Gridware
Reserved
2025-11-26 00:21 UTC
Published
2025-11-26 00:39 UTC
Last updated
2025-12-03 16:00 UTC
Primary CWE
CWE-345
CWE-345 Unauthenticated Arbitrary File Upload (upgrade_conte…
Vendor / Product
DB Electronica Telecomunicazioni S.p.A. / Mozart FM Transmitter
Sources
cve.org  ·  NVD

Severity & Metrics

9.9 CRITICAL CVSS 4.0
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
SSVC — CISA Coordinator
Exploitation
PoC
Automatable
yes
Tech. Impact
total
Affected products (1)
VendorProductPlatformVersions
DB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter — 30, 50, 100, 300 …
Weakness (CWE)
CWESourceDescription
CWE-345 cna CWE-345 Unauthenticated Arbitrary File Upload (upgrade_contents.php)
CVSS scores (1)
ScoreSeverityVersionSourceVector
9.9 CRITICAL 4.0 cna 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
References (1)
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