CVE-2025-66259
📋 TL;DR
This vulnerability allows authenticated attackers to execute arbitrary commands with root privileges on DB Electronica Telecomunicazioni Mozart FM Transmitters. Attackers can inject malicious input into date/time parameters that get passed directly to shell commands. All organizations using affected Mozart FM Transmitter models are at risk.
💻 Affected Systems
- DB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter
📦 What is this software?
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Mozart Dds Next 3500 Firmware by Dbbroadcast
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Mozart Dds Next 7000 Firmware by Dbbroadcast
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with root-level remote code execution, allowing attackers to install persistent backdoors, exfiltrate sensitive data, disrupt broadcast operations, or pivot to other network systems.
Likely Case
Unauthorized system access leading to configuration tampering, service disruption, or data theft from the transmitter system.
If Mitigated
Limited impact if proper network segmentation, strict access controls, and input validation are implemented, though risk remains due to the high-privilege nature of the vulnerability.
🎯 Exploit Status
Exploitation requires authentication but is straightforward once credentials are obtained. The vulnerability involves direct command injection in main_ok.php.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: No
Instructions:
Check vendor website for security updates. If no patch is available, implement workarounds immediately.
🔧 Temporary Workarounds
Input Validation Filter
allAdd input validation to sanitize date/time parameters before passing to shell commands
# Modify main_ok.php to validate user input
# Example: if (!preg_match('/^[0-9:]+$/', $_POST['time'])) { die('Invalid input'); }
Web Application Firewall Rules
allBlock malicious patterns in date/time parameters
# WAF rule to block shell metacharacters in time parameters
# Example ModSecurity: SecRule ARGS:time "[;|&`$()]" "deny,status:403"
🧯 If You Can't Patch
- Network segmentation: Isolate FM transmitters from other critical systems and restrict access to management interfaces
- Access control hardening: Implement strong authentication, limit admin accounts, and monitor for suspicious login attempts
🔍 How to Verify
Check if Vulnerable:
Test if date/time parameters in main_ok.php accept shell metacharacters like ;, |, &, or `Check Version:
# Check transmitter model/version via web interface or system information pageVerify Fix Applied:
Verify that input validation rejects shell metacharacters and only accepts properly formatted date/time values📡 Detection & Monitoring
Log Indicators:
- Unusual shell commands in system logs
- Multiple failed authentication attempts followed by successful login
- Unexpected processes running as root
Network Indicators:
- Unusual outbound connections from transmitter systems
- Traffic to unexpected ports or IP addresses
SIEM Query:
source="transmitter_logs" AND (command="date" AND args="*;*" OR args="*|*" OR args="*&*" OR args="*`*")