CVE-2023-50002
📋 TL;DR
This CVE describes a stack overflow vulnerability in Tenda W30E routers that allows remote attackers to execute arbitrary code or cause denial of service. Attackers can exploit this by sending specially crafted requests to the formRebootMeshNode function. Users of affected Tenda W30E routers are at risk.
💻 Affected Systems
- Tenda W30E
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete device compromise, network takeover, and lateral movement to connected devices.
Likely Case
Router crash/reboot causing denial of service and network disruption for connected users.
If Mitigated
Limited impact if device is behind firewall with restricted WAN access and proper network segmentation.
🎯 Exploit Status
Public proof-of-concept exists in GitHub repository, making exploitation straightforward for attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: Yes
Instructions:
1. Check Tenda official 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 router management interface
Access router admin panel → System → Remote Management → Disable
Network segmentation
allIsolate router management interface to separate VLAN
🧯 If You Can't Patch
- Replace affected router with different model/brand
- Place router behind firewall with strict inbound rules blocking all unnecessary ports
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in admin interface under System → Firmware UpgradeCheck Version:
curl -s http://router-ip/goform/getStatus | grep versionVerify Fix Applied:
Verify firmware version is newer than V16.01.0.12(4843) and test with known exploit payloads📡 Detection & Monitoring
Log Indicators:
- Multiple POST requests to /goform/rebootMeshNode
- Router crash/reboot events
- Unusual traffic patterns to router management interface
Network Indicators:
- HTTP POST requests with large payloads to router port 80/443
- Traffic spikes to router management interface
SIEM Query:
source="router.log" AND (url="/goform/rebootMeshNode" OR message="reboot" OR message="crash")