CVE-2026-24430
📋 TL;DR
This vulnerability exposes administrative credentials in plaintext within HTTP responses from the Tenda W30E V2 router's maintenance interface. Attackers on the same network can intercept these credentials to gain administrative access to the router. All users of affected firmware versions are vulnerable.
💻 Affected Systems
- Shenzhen Tenda W30E V2 router
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full router compromise allowing attacker to reconfigure network settings, intercept all traffic, install malicious firmware, or use the router as a pivot point into the internal network.
Likely Case
Unauthorized administrative access to the router enabling network monitoring, DNS hijacking, or credential harvesting from connected devices.
If Mitigated
Limited to internal network attackers only, with no external exposure if management interface is properly firewalled.
🎯 Exploit Status
Exploitation requires network access but no authentication; trivial to automate credential extraction from HTTP responses
🛠️ 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 W30E V2
3. Access router admin interface
4. Navigate to System Tools > Firmware Upgrade
5. Upload and install new firmware
6. Reboot router
🔧 Temporary Workarounds
Disable HTTP management
allDisable unencrypted HTTP access to management interface
Enable HTTPS-only management
allConfigure router to only allow HTTPS access to admin interface
🧯 If You Can't Patch
- Isolate router management interface to trusted network segment only
- Implement network access controls to restrict who can reach the router's management IP
🔍 How to Verify
Check if Vulnerable:
Capture HTTP traffic to router management interface and search for plaintext credentials in responsesCheck Version:
Check router web interface or use 'curl http://router-ip/goform/getStatus' and parse firmware versionVerify Fix Applied:
Verify firmware version is newer than V16.01.0.19(5037) and test that credentials no longer appear in HTTP responses📡 Detection & Monitoring
Log Indicators:
- Multiple failed login attempts followed by successful login from unexpected IP
- Configuration changes from unauthorized IP addresses
Network Indicators:
- HTTP traffic to router management interface containing plaintext credentials
- Unusual administrative access patterns
SIEM Query:
source="router_logs" AND (event_type="admin_login" AND src_ip NOT IN [authorized_ips])