CVE-2025-57087
📋 TL;DR
This vulnerability in Tenda W30E routers allows attackers to cause a Denial of Service (DoS) by sending specially crafted requests that trigger a stack overflow in the wireless configuration function. The vulnerability affects users running vulnerable firmware versions, potentially disrupting network connectivity. Attackers can exploit this remotely without authentication.
💻 Affected Systems
- Tenda W30E
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete router crash requiring physical reboot, persistent network downtime, and potential for remote code execution if the overflow can be controlled precisely.
Likely Case
Router becomes unresponsive, requiring reboot to restore functionality, causing temporary network disruption.
If Mitigated
Minimal impact if the router is behind a firewall with restricted access to its management interface.
🎯 Exploit Status
The vulnerability requires sending a crafted HTTP request to the router's management interface. Public proof-of-concept code is available in the referenced GitHub repository.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
1. Check Tenda's official website for firmware updates. 2. If an update is available, download it from the vendor's official site. 3. Log into the router's web interface. 4. Navigate to the firmware upgrade section. 5. Upload and apply the new firmware. 6. Wait for the router to reboot.
🔧 Temporary Workarounds
Disable Remote Management
allPrevent external access to the router's management interface
Restrict Management Interface Access
allUse firewall rules to limit access to the router's web interface to trusted IP addresses only
🧯 If You Can't Patch
- Segment the router on a separate network VLAN to limit blast radius
- Implement network monitoring for unusual HTTP requests to the router's management interface
🔍 How to Verify
Check if Vulnerable:
Check the router's firmware version via the web interface at http://router_ip. If the version is V16.01.0.19 (5037) or earlier, it is likely vulnerable.Check Version:
curl -s http://router_ip | grep -i 'firmware version' or check the web interface directlyVerify Fix Applied:
After updating firmware, verify the version has changed to a newer release than V16.01.0.19 (5037).📡 Detection & Monitoring
Log Indicators:
- Unusual HTTP POST requests to /goform/wirelessAdvancedSet endpoint
- Router crash/reboot logs
- Large payloads in HTTP requests to router management interface
Network Indicators:
- HTTP requests with unusually long countryCode parameter values
- Multiple connection attempts to router management port (typically 80/443)
SIEM Query:
source="router_logs" AND (url_path="/goform/wirelessAdvancedSet" AND content_length>1000)