CVE-2025-70744
📋 TL;DR
Tenda AX-1806 routers version 1.0.0.1 contain a stack overflow vulnerability in the cloneType parameter that allows attackers to cause Denial of Service (DoS) through crafted requests. This affects all users running the vulnerable firmware version. The vulnerability requires network access to the router's management interface.
💻 Affected Systems
- Tenda AX-1806
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete router crash requiring physical power cycle, potentially disrupting all network connectivity for connected devices.
Likely Case
Router becomes unresponsive to legitimate requests, requiring reboot to restore functionality.
If Mitigated
Limited impact if router is behind firewall with restricted management interface access.
🎯 Exploit Status
Public GitHub repository contains technical details and proof-of-concept; exploitation requires sending crafted HTTP request to vulnerable endpoint.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: Yes
Instructions:
1. Check Tenda support site for firmware updates 2. Download latest firmware 3. Access router admin interface 4. Navigate to System Tools > Firmware Upgrade 5. Upload new firmware file 6. Wait for automatic reboot
🔧 Temporary Workarounds
Restrict Management Interface Access
allLimit access to router management interface to trusted IP addresses only
Disable Remote Management
allTurn off remote management feature if enabled
🧯 If You Can't Patch
- Segment router on isolated network segment
- Implement network monitoring for abnormal HTTP requests to router management interface
🔍 How to Verify
Check if Vulnerable:
Check firmware version in router admin interface under System Status or System ToolsCheck Version:
Access router web interface and navigate to System Status pageVerify Fix Applied:
Verify firmware version is no longer v1.0.0.1 after update📡 Detection & Monitoring
Log Indicators:
- Multiple HTTP requests to /goform/setCloneType or similar endpoints
- Router reboot logs without user action
- High CPU/memory usage alerts
Network Indicators:
- Unusual HTTP POST requests to router management interface with malformed cloneType parameter
- Sudden drop in router responsiveness
SIEM Query:
source="router_logs" AND (uri="/goform/setCloneType" OR message="reboot" OR message="crash")