CVE-2025-44842
📋 TL;DR
This CVE describes a command injection vulnerability in TOTOLINK CA600-PoE routers that allows attackers to execute arbitrary system commands via the Port parameter in the msg_process function. Attackers can exploit this to gain unauthorized access, modify device configurations, or launch further attacks. Only users of the specific TOTOLINK CA600-PoE router model with the vulnerable firmware version are affected.
💻 Affected Systems
- TOTOLINK CA600-PoE
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing attackers to install persistent backdoors, pivot to internal networks, intercept network traffic, or brick the device.
Likely Case
Unauthorized command execution leading to configuration changes, network disruption, or credential theft from the device.
If Mitigated
Limited impact with proper network segmentation and access controls preventing exploitation attempts.
🎯 Exploit Status
The GitHub reference contains proof-of-concept code demonstrating exploitation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: No
Instructions:
Check TOTOLINK official website for firmware updates. If available, download and install the latest firmware following vendor instructions.
🔧 Temporary Workarounds
Network Segmentation
allIsolate affected devices from internet and restrict access to management interfaces
Access Control Lists
allImplement firewall rules to restrict access to the vulnerable service
🧯 If You Can't Patch
- Replace affected devices with supported models
- Implement strict network monitoring and anomaly detection
🔍 How to Verify
Check if Vulnerable:
Check device firmware version via web interface or CLI. If version matches V5.3c.6665_B20180820, device is vulnerable.Check Version:
Check via web interface at http://[device-ip] or consult device documentation for CLI version checkVerify Fix Applied:
Verify firmware version has been updated to a version newer than V5.3c.6665_B20180820📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in system logs
- Multiple failed authentication attempts to management interface
- Unexpected configuration changes
Network Indicators:
- Unusual outbound connections from the device
- Traffic to unexpected ports
- Suspicious payloads in HTTP requests to management interface
SIEM Query:
source="router-logs" AND ("msg_process" OR "Port parameter" OR command_injection)