CVE-2022-24165
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary commands on Tenda G1 and G3 routers by injecting malicious commands into the qvlanIP parameter. Attackers can gain full control of affected routers, potentially compromising network security. Users of Tenda G1 and G3 routers with vulnerable firmware versions are affected.
💻 Affected Systems
- Tenda G1 Router
- Tenda G3 Router
📦 What is this software?
G1 Firmware by Tendacn
G3 Firmware by Tendacn
⚠️ Risk & Real-World Impact
Worst Case
Complete router compromise allowing attackers to intercept all network traffic, install persistent backdoors, pivot to internal networks, and use the router as part of a botnet.
Likely Case
Router takeover enabling traffic interception, credential theft, DNS hijacking, and lateral movement to connected devices.
If Mitigated
Limited impact if network segmentation isolates routers and strict access controls prevent external exploitation.
🎯 Exploit Status
Public proof-of-concept available on GitHub; exploitation requires network access to router management interface.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not publicly available
Restart Required: Yes
Instructions:
1. Check Tenda website for firmware updates
2. Download latest firmware for your router model
3. Access router admin interface
4. Navigate to firmware upgrade section
5. Upload and install new firmware
6. Reboot router after installation
🔧 Temporary Workarounds
Disable Remote Management
allPrevent external access to router management interface
Network Segmentation
allIsolate router management interface to trusted network segment
🧯 If You Can't Patch
- Replace affected routers with updated models from different vendors
- Implement strict firewall rules blocking all external access to router management ports
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in admin interface; if version matches affected range, assume vulnerable.Check Version:
Login to router admin interface and check System Status or Firmware Information pageVerify Fix Applied:
Verify firmware version has been updated to a version newer than v15.11.0.17(9502)_CN📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in system logs
- Multiple failed login attempts to router interface
- Unexpected process creation
Network Indicators:
- Unusual outbound connections from router
- Traffic to known malicious IPs
- DNS queries to suspicious domains
SIEM Query:
source="router_logs" AND ("formSetQvlanList" OR "qvlanIP") AND command="*"