CVE-2025-66254 Unauthenticated Arbitrary File Deletion (upgrade_contents.php)
Unauthenticated attackers can delete arbitrary files via the deleteupgrade parameter in the FM Transmitter web interface, potentially causing denial of service.
- 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-2025-66254?
CVE-2025-66254 is a high-severity path traversal 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 Deletion (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 The deleteupgrade parameter allows unauthenticated deletion of arbitrary files.
The `deleteupgrade` parameter in `/var/www/upgrade_contents.php` allows unauthenticated deletion of arbitrary files in `/var/www/upload/` without any extension restriction or path sanitization, enabling attackers to remove critical system files.
Weakness: CWE-73
Which versions are affected by CVE-2025-66254?
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-2025-66254?
No fix has been published for CVE-2025-66254 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2025-66254 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-66254 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-2025-66256 Unauthenticated Arbitrary File Upload (patch_contents.php)
- CVE-2025-66261 Unauthenticated OS Command Injection (restore_settings.php)
- CVE-2025-63228 File upload in n/a
Sources
Also known as GHSA-x997-vvm5-qvcr.