CVE-2025-15233
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code on Tenda M3 routers via a heap-based buffer overflow in the web interface. Attackers can exploit this by sending specially crafted requests to the /goform/setAdInfoDetail endpoint. All users running Tenda M3 version 1.0.0.13(4903) are affected.
💻 Affected Systems
- Tenda M3
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise leading to remote code execution, router takeover, lateral movement into internal networks, and persistent backdoor installation.
Likely Case
Remote code execution allowing attackers to modify router settings, intercept network traffic, or use the device as a pivot point for further attacks.
If Mitigated
Denial of service or temporary disruption if exploit fails to achieve code execution but causes system instability.
🎯 Exploit Status
Public exploit code is available, making this easily weaponizable by attackers with basic skills.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.tenda.com.cn/
Restart Required: Yes
Instructions:
1. Check Tenda website for firmware updates. 2. Download latest firmware. 3. Access router admin interface. 4. Navigate to firmware upgrade section. 5. Upload and apply new firmware. 6. Reboot router.
🔧 Temporary Workarounds
Disable Remote Management
allPrevent external access to the vulnerable web interface
Access router admin panel -> System -> Remote Management -> Disable
Block Vulnerable Endpoint
linuxUse firewall rules to block access to the vulnerable endpoint
iptables -A INPUT -p tcp --dport 80 -m string --string "/goform/setAdInfoDetail" --algo bm -j DROP
🧯 If You Can't Patch
- Isolate affected routers in separate network segments with strict firewall rules
- Implement network monitoring and intrusion detection for exploit attempts
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in admin interface under System Status or About pageCheck Version:
curl -s http://router-ip/goform/getStatus | grep versionVerify Fix Applied:
Verify firmware version is no longer 1.0.0.13(4903) after update📡 Detection & Monitoring
Log Indicators:
- HTTP POST requests to /goform/setAdInfoDetail with unusually long parameter values
- Router crash/restart logs
Network Indicators:
- HTTP traffic to router IP on port 80 with POST to /goform/setAdInfoDetail containing buffer overflow patterns
SIEM Query:
source="router_logs" AND uri="/goform/setAdInfoDetail" AND (adName OR smsPassword OR smsAccount) length > 100