CVE-2025-9585
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary commands on Comfast CF-N1 routers running firmware version 2.6.0. Attackers can exploit a command injection flaw in the web management interface to gain unauthorized access and control of affected devices. This affects all users of Comfast CF-N1 routers with the vulnerable firmware.
💻 Affected Systems
- Comfast CF-N1
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing attackers to install persistent backdoors, intercept network traffic, pivot to internal networks, or use the device for botnet activities.
Likely Case
Unauthorized command execution leading to device configuration changes, credential theft, or denial of service attacks.
If Mitigated
Limited impact if devices are behind firewalls with restricted web interface access and proper network segmentation.
🎯 Exploit Status
Public exploit details are available in GitHub repositories. The vulnerability requires no authentication and has simple exploitation vectors.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: Yes
Instructions:
1. Check Comfast website for firmware updates
2. Download latest firmware if available
3. Upload via web interface
4. Reboot device after flashing
🔧 Temporary Workarounds
Disable WAN access to web interface
linuxBlock external access to the router's web management interface
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -j DROP
Change default management ports
allModify web interface to use non-standard ports
🧯 If You Can't Patch
- Isolate affected devices in separate VLAN with strict firewall rules
- Implement network monitoring for suspicious traffic to/from affected devices
🔍 How to Verify
Check if Vulnerable:
Check firmware version via web interface at System Status > Firmware VersionCheck Version:
curl -s http://router-ip/cgi-bin/luci/admin/status | grep 'Firmware Version'Verify Fix Applied:
Verify firmware version is no longer 2.6.0 and test if command injection payloads are blocked📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in system logs
- Multiple failed login attempts to web interface
- Suspicious file operations in /tmp directory
Network Indicators:
- HTTP POST requests to /cgi-bin/luci with command injection patterns
- Outbound connections from router to unusual IP addresses
SIEM Query:
source="router-logs" AND ("portal_delete_picname" OR "wifilith_delete_pic_file") AND ("|" OR ";" OR "$" OR "`")