CVE-2025-66253: Unauthenticated OS Command Injection (start_upgrade.php) in DB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter versions 30, 50, 100, 300, 500, 1000…

PriorityP271critical9.8CVSS 3.1

AVNACLPRNUINSUCHIHAH

EPSS

2.09%

79.3th percentile

Unauthenticated OS Command Injection (start_upgrade.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 User input passed directly to exec() allows remote code execution via start_upgrade.php. The `/var/tdf/start_upgrade.php` endpoint passes user-controlled `$_GET["filename"]` directly into `exec()` without sanitization or shell escaping. Attackers can inject arbitrary shell commands using metacharacters (`;`, `|`, etc.) to achieve remote code execution as the web server user (likely root).

Affected

11 ranges

Vendor	Product	Version range	Fixed in
db_electronica_telecomunicazioni_s.p.a	mozart_fm_transmitter	—	—
db_electronica_telecomunicazioni_s.p.a	mozart_fm_transmitter	—	—
db_electronica_telecomunicazioni_s.p.a	mozart_fm_transmitter	—	—
db_electronica_telecomunicazioni_s.p.a	mozart_fm_transmitter	—	—
db_electronica_telecomunicazioni_s.p.a	mozart_fm_transmitter	—	—
db_electronica_telecomunicazioni_s.p.a	mozart_fm_transmitter	—	—
db_electronica_telecomunicazioni_s.p.a	mozart_fm_transmitter	—	—
db_electronica_telecomunicazioni_s.p.a	mozart_fm_transmitter	—	—
db_electronica_telecomunicazioni_s.p.a	mozart_fm_transmitter	—	—
db_electronica_telecomunicazioni_s.p.a	mozart_fm_transmitter	—	—
db_electronica_telecomunicazioni_s.p.a	mozart_fm_transmitter	—	—

CVSS provenance

nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvdv4.09.9CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.