CVE-2025-57217
📋 TL;DR
This CVE describes a stack buffer overflow vulnerability in Tenda AC10 routers that allows remote attackers to execute arbitrary code via the Password parameter during login authentication. Attackers can potentially gain full control of affected routers. This affects users running Tenda AC10 v4.0 with vulnerable firmware.
💻 Affected Systems
- Tenda AC10 v4.0
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete router compromise, credential theft, network traffic interception, and lateral movement into connected devices.
Likely Case
Router compromise allowing attackers to modify DNS settings, intercept traffic, or use the router as a pivot point for further attacks.
If Mitigated
Limited impact if router is behind firewall with restricted WAN access and strong authentication requirements.
🎯 Exploit Status
Exploitation requires sending specially crafted password parameter to the login endpoint. The reference link contains technical details about the vulnerability.
🛠️ 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 AC10 v4.0
3. Access router web interface
4. Navigate to System Tools > Firmware Upgrade
5. Upload and apply new firmware
6. Reboot router
🔧 Temporary Workarounds
Disable Remote Management
allPrevent external access to router web interface
Change Default Credentials
allUse strong, unique passwords for router admin access
🧯 If You Can't Patch
- Isolate router on separate VLAN with strict firewall rules
- Implement network segmentation to limit lateral movement
🔍 How to Verify
Check if Vulnerable:
Check firmware version in router web interface under System Status or System ToolsCheck Version:
curl -s http://router-ip/goform/getStatus | grep versionVerify Fix Applied:
Verify firmware version has been updated to a version newer than v16.03.10.09_multi_TDE01📡 Detection & Monitoring
Log Indicators:
- Multiple failed login attempts with long password strings
- Unusual POST requests to /goform/loginAuth
Network Indicators:
- Unusual traffic patterns from router to external IPs
- DNS hijacking or unexpected proxy configurations
SIEM Query:
source="router_logs" AND (url="/goform/loginAuth" AND password_length>100)