CVE-2025-66255

critical

Unauthenticated Arbitrary File Upload (upgrade_contents.php) in DB Electronica Telecomunicazioni S.p.A.

Vendor / product: Dbbroadcast — mozart next 3000 firmware

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

9.8

9.8 (CVSS v3.1)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity source: NVD CVSS v3.1 (nvd@nist.gov)

Timeline (UTC)

Published: 2025-11-26 01:16

Modified: 2026-10-18 20:10

NVD status: Analyzed

Last synced 3 days ago

Verified against the source API 2026-10-27 07:06 UTC

Exploitation

Not listed in CISA KEV (as of last catalog sync)

Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

dbbroadcast / mozart_next_3000_firmware all versions

dbbroadcast / mozart_next_3500_firmware all versions

dbbroadcast / mozart_next_50_firmware all versions

dbbroadcast / mozart_next_500_firmware all versions

dbbroadcast / mozart_next_6000_firmware all versions

dbbroadcast / mozart_next_7000_firmware all versions

dbbroadcast / mozart_next_100_firmware all versions

dbbroadcast / mozart_next_1000_firmware all versions

dbbroadcast / mozart_next_2000_firmware all versions

dbbroadcast / mozart_next_30_firmware all versions

dbbroadcast / mozart_next_300_firmware all versions

dbbroadcast / mozart_dds_next_30_firmware all versions

dbbroadcast / mozart_dds_next_50_firmware all versions

dbbroadcast / mozart_dds_next_100_firmware all versions

dbbroadcast / mozart_dds_next_300_firmware all versions

dbbroadcast / mozart_dds_next_500_firmware all versions

dbbroadcast / mozart_dds_next_1000_firmware all versions

dbbroadcast / mozart_dds_next_2000_firmware all versions

dbbroadcast / mozart_dds_next_3000_firmware all versions

dbbroadcast / mozart_dds_next_3500_firmware all versions

dbbroadcast / mozart_dds_next_6000_firmware all versions

dbbroadcast / mozart_dds_next_7000_firmware all versions

Weakness classification (CWE)

CWE-345 CWE-434

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

No vendor advisory or patch reference tagged by NVD. Check the references below.

References

https://www.abdulmhsblog.com/posts/webfmvulns/ b7efe717-a805-47cf-8e9a-921fca0ce0ce
https://www.abdulmhsblog.com/posts/webfmvulns/ 134c704f-9b21-4f2e-91b3-4a467353bcc0

Data sources

NVD CVE API 2.0 — fetched 2026-10-27 07:06 UTC · record ↗

Learn the basics

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CVE-2025-66255

Affected products

Weakness classification (CWE)

Mitigation & advisories

References

Data sources

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