CVE-2025-66256 Unauthenticated Arbitrary File Upload (patch_contents.php)
Unauthenticated attackers can upload malicious files to the FM transmitter via an unrestricted file upload vulnerability, potentially leading to remote code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-66256?
CVE-2025-66256 is a critical vulnerability in DB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter, published on 26 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Unauthenticated Arbitrary File Upload (patch_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 Unrestricted file upload in patch_contents.php allows uploading malicious files.
The `/var/tdf/patch_contents.php` endpoint allows unauthenticated arbitrary file uploads without file type validation, MIME checking, or size restrictions beyond 16MB, enabling attackers to upload malicious files.
Weakness: CWE-434
Which versions are affected by CVE-2025-66256?
It affects 22 products.
Products include Dbbroadcast Mozart Dds Next 1000 Firmware, Dbbroadcast Mozart Dds Next 100 Firmware, Dbbroadcast Mozart Dds Next 2000 Firmware, Dbbroadcast Mozart Dds Next 3000 Firmware, Dbbroadcast Mozart Dds Next 300 Firmware, Dbbroadcast Mozart Dds Next 30 Firmware and 16 more.
How do I fix CVE-2025-66256?
No fix has been published for CVE-2025-66256 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-66256 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-66256 exists.
Other vulnerabilities in DB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter
- CVE-2025-66253 Unauthenticated OS Command Injection (start_upgrade.php)
- CVE-2025-66255 Unauthenticated Arbitrary File Upload (upgrade_contents.php)
- CVE-2025-66261 Unauthenticated OS Command Injection (restore_settings.php)
- CVE-2025-63228 File upload in n/a
- CVE-2025-66259 Authenticated Root Remote Code Execution through improper filtering of HTTP post request parameters
Sources
Also known as GHSA-hg79-vv5q-whmg.