CVE-2025-15163
📋 TL;DR
This vulnerability in Tenda WH450 routers allows remote attackers to execute arbitrary code via a stack-based buffer overflow in the SafeEmailFilter functionality. Attackers can exploit this without authentication to potentially take full control of affected devices. All users running Tenda WH450 firmware version 1.0.0.18 are affected.
💻 Affected Systems
- Tenda WH450
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete device compromise, network infiltration, and persistent backdoor installation
Likely Case
Device takeover enabling network traffic interception, credential theft, and lateral movement within the network
If Mitigated
Denial of service or device crash if exploit fails or protections are in place
🎯 Exploit Status
Public proof-of-concept available on GitHub, making exploitation straightforward for attackers
🛠️ 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. If update available, download and install via router admin interface
3. Reboot router after installation
🔧 Temporary Workarounds
Disable remote management
allPrevent external access to vulnerable interface
Access router admin panel → Security → Disable Remote Management
Network segmentation
allIsolate affected routers from critical network segments
🧯 If You Can't Patch
- Replace affected devices with patched or different models
- Implement strict network access controls and firewall rules to limit exposure
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in admin interface (typically under System Status or About)Check Version:
Check via router web interface or SSH if enabled: cat /proc/version or show version commandsVerify Fix Applied:
Verify firmware version is no longer 1.0.0.18 after update📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /goform/SafeEmailFilter
- Router crash/reboot logs
- Memory corruption errors
Network Indicators:
- Malformed HTTP requests to router management interface
- Suspicious traffic patterns to port 80/443 of router
SIEM Query:
source="router_logs" AND (uri="/goform/SafeEmailFilter" OR message="buffer overflow" OR message="segmentation fault")