CVE-2025-14879
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code on Tenda WH450 routers by exploiting a stack-based buffer overflow in the HTTP request handler. Attackers can send specially crafted requests to the /goform/onSSIDChange endpoint to gain control of affected devices. All users of Tenda WH450 routers running firmware version 1.0.0.18 are affected.
💻 Affected Systems
- Tenda WH450
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise leading to persistent backdoor installation, network traffic interception, lateral movement to other devices, and botnet recruitment.
Likely Case
Remote code execution allowing attackers to modify router settings, intercept network traffic, and use the device as a pivot point for further attacks.
If Mitigated
Limited impact if network segmentation prevents router access and intrusion detection systems block exploit attempts.
🎯 Exploit Status
Public proof-of-concept code is available, making exploitation straightforward for 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's official website for firmware updates. 2. Download the latest firmware for WH450. 3. Log into router admin interface. 4. Navigate to firmware upgrade section. 5. Upload and apply the new firmware. 6. Wait for router to reboot.
🔧 Temporary Workarounds
Disable Remote Management
allPrevent external access to router web interface
Log into router admin > Advanced Settings > Remote Management > Disable
Network Segmentation
allIsolate router management interface from user networks
Configure VLANs to separate management traffic from user traffic
🧯 If You Can't Patch
- Replace affected routers with different models from vendors with better security track records
- Implement strict network access controls to limit who can reach the router management interface
🔍 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 1.0.0.18 after update📡 Detection & Monitoring
Log Indicators:
- HTTP POST requests to /goform/onSSIDChange with abnormal ssid_index parameter values
- Router reboot events following suspicious requests
Network Indicators:
- Unusual outbound connections from router to unknown IPs
- HTTP requests with buffer overflow patterns to router management interface
SIEM Query:
source="router_logs" AND (uri="/goform/onSSIDChange" OR message="buffer overflow")🔗 References
- https://github.com/z472421519/BinaryAudit/blob/main/PoC/BOF/Tenda_WH450/onSSIDChange/onSSIDChange.md
- https://vuldb.com/?ctiid.337370
- https://vuldb.com/?id.337370
- https://vuldb.com/?submit.715362
- https://www.tenda.com.cn/
- https://github.com/z472421519/BinaryAudit/blob/main/PoC/BOF/Tenda_WH450/onSSIDChange/onSSIDChange.md
