CVE-2024-32281
📋 TL;DR
Tenda AC7V1.0 routers running firmware version 15.03.06.44 contain a command injection vulnerability in the formexeCommand function via the cmdinput parameter. This allows authenticated attackers to execute arbitrary commands on the device with root privileges. Users of affected Tenda AC7 routers are at risk.
💻 Affected Systems
- Tenda AC7V1.0 router
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing attacker to install persistent malware, pivot to internal networks, intercept all network traffic, and brick the device.
Likely Case
Attacker gains root shell access to router, enabling traffic interception, DNS manipulation, credential theft, and lateral movement to connected devices.
If Mitigated
Limited impact with proper network segmentation, but still allows router compromise and potential internal network access.
🎯 Exploit Status
Exploit requires authentication but is trivial to execute once authenticated. Public proof-of-concept available in GitHub repository.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: Yes
Instructions:
1. Check Tenda website for firmware updates
2. Download latest firmware for AC7V1.0
3. Access router admin interface
4. Navigate to System Tools > Firmware Upgrade
5. Upload and install new firmware
6. Reboot router
🔧 Temporary Workarounds
Disable remote administration
allPrevents external access to vulnerable web interface
Change default credentials
allMitigates risk if attacker attempts to authenticate
🧯 If You Can't Patch
- Isolate router on separate VLAN with strict firewall rules
- Implement network monitoring for unusual router traffic patterns
🔍 How to Verify
Check if Vulnerable:
Check firmware version in router admin interface under System Status or System ToolsCheck Version:
curl -s http://router-ip/goform/getStatus | grep versionVerify Fix Applied:
Verify firmware version is no longer v15.03.06.44 after update📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /goform/exeCommand
- Multiple failed login attempts followed by successful login
Network Indicators:
- Unusual outbound connections from router
- DNS queries to suspicious domains from router
SIEM Query:
source="router-logs" AND (uri="/goform/exeCommand" OR cmd="*;*" OR cmd="*|*")