CVE-2025-11005
📋 TL;DR
This CVE describes an OS command injection vulnerability in TOTOLINK X6000R routers that allows attackers to execute arbitrary commands on the device. Attackers can potentially gain full control of affected routers, compromising network security and connected devices. All users running vulnerable firmware versions are affected.
💻 Affected Systems
- TOTOLINK X6000R
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of router with persistent backdoor installation, credential theft, network traffic interception, and pivot to internal network devices.
Likely Case
Router takeover leading to DNS hijacking, credential harvesting, and use as attack platform against internal network.
If Mitigated
Limited impact if router is behind firewall with restricted management interface access and network segmentation.
🎯 Exploit Status
Proof of concept available in GitHub repository. Exploitation requires network access to web interface.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: V9.4.0cu.1458_B20250708 or later
Vendor Advisory: https://www.totolink.net/home/menu/detail/menu_listtpl/download/id/247/ids/36.html
Restart Required: Yes
Instructions:
1. Download latest firmware from TOTOLINK website. 2. Log into router web interface. 3. Navigate to System Tools > Firmware Upgrade. 4. Upload firmware file. 5. Wait for automatic reboot.
🔧 Temporary Workarounds
Disable Remote Management
allPrevent external access to web management interface
Network Segmentation
allIsolate router management interface to trusted network segment
🧯 If You Can't Patch
- Disable WAN-side access to router management interface
- Implement strict firewall rules limiting access to router management ports
🔍 How to Verify
Check if Vulnerable:
Check firmware version in router web interface under System Status > Firmware VersionCheck Version:
curl -s http://router-ip/cgi-bin/luci/ | grep -i versionVerify Fix Applied:
Verify firmware version shows V9.4.0cu.1458_B20250708 or later after upgrade📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in system logs
- Multiple failed login attempts followed by successful access
- Unexpected process creation
Network Indicators:
- Unusual outbound connections from router
- DNS queries to suspicious domains
- Port scanning originating from router
SIEM Query:
source="router_logs" AND ("command injection" OR "os.execute" OR suspicious_command_pattern)