Critical 9.9Published Nov 25, 2025

CVE-2025-66255Unauthenticated Arbitrary File Upload (upgrade_contents.php)

Updated under an hour ago (Oct 26, 2026, 2:50 PM ET)

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It affects DB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter and 22 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for DB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter

Exploited in the last 30 days

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: 9.9 CRITICAL (v4.0, 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
Weakness (CWE): CWE-345
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Gridware
NVD analysis: Analyzed
Record last updated: Dec 3, 2025
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

DB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter db_electronica_telecomunicazioni_s.p.a:mozart_fm_transmitter (from the name)	30; 50; 100; 300; 500; 1000; 2000; 3000; and 3 more ranges	CNA record
dbbroadcast mozart_next_3000_firmware dbbroadcast:mozart_next_3000_firmware	all versions	NVD
dbbroadcast mozart_next_3500_firmware dbbroadcast:mozart_next_3500_firmware	all versions	NVD
dbbroadcast mozart_next_50_firmware dbbroadcast:mozart_next_50_firmware	all versions	NVD
dbbroadcast mozart_next_500_firmware dbbroadcast:mozart_next_500_firmware	all versions	NVD
dbbroadcast mozart_next_6000_firmware dbbroadcast:mozart_next_6000_firmware	all versions	NVD
dbbroadcast mozart_next_7000_firmware dbbroadcast:mozart_next_7000_firmware	all versions	NVD
dbbroadcast mozart_next_100_firmware dbbroadcast:mozart_next_100_firmware	all versions	NVD
dbbroadcast mozart_next_1000_firmware dbbroadcast:mozart_next_1000_firmware	all versions	NVD
dbbroadcast mozart_next_2000_firmware dbbroadcast:mozart_next_2000_firmware	all versions	NVD
1–10 of 23

References

References

https://www.abdulmhsblog.com/posts/webfmvulns/	exploit, technical-description, third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.