CVE-2025-25605
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary commands on Totolink X5000R routers through command injection in the apcli_wps_gen_pincode function. Attackers can gain full control of affected devices, potentially compromising network security. Users of Totolink X5000R routers with vulnerable firmware are affected.
💻 Affected Systems
- Totolink X5000R
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device takeover leading to persistent backdoor installation, credential theft, network pivoting to internal systems, and participation in botnets.
Likely Case
Router compromise allowing traffic interception, DNS manipulation, and credential harvesting from connected devices.
If Mitigated
Limited impact if device is behind firewall with restricted WAN access and strong network segmentation.
🎯 Exploit Status
Exploit requires authentication to the web interface. GitHub repository contains proof-of-concept demonstrating command injection.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: Yes
Instructions:
1. Check Totolink website for firmware updates. 2. Download latest firmware for X5000R. 3. Access router web interface. 4. Navigate to System Tools > Firmware Upgrade. 5. Upload new firmware file. 6. Wait for automatic reboot.
🔧 Temporary Workarounds
Disable WPS functionality
allTurn off WPS feature to prevent access to vulnerable function
Access router web interface > Wireless > WPS > Disable
Restrict web interface access
allLimit access to router administration interface
Access router web interface > Security > Management > Set allowed IP addresses only
🧯 If You Can't Patch
- Isolate router on separate VLAN with strict firewall rules
- Implement network monitoring for suspicious outbound connections from router
🔍 How to Verify
Check if Vulnerable:
Check firmware version in router web interface: System Status > Firmware Version. If version is V9.1.0u.6369_B20230113, device is vulnerable.Check Version:
curl -s http://router-ip/cgi-bin/luci/ | grep firmwareVerify Fix Applied:
After firmware update, verify version has changed from V9.1.0u.6369_B20230113 to a newer version.📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in system logs
- Multiple failed authentication attempts followed by successful login
- Suspicious processes running on router
Network Indicators:
- Unexpected outbound connections from router
- DNS queries to suspicious domains
- Port scans originating from router
SIEM Query:
source="router.log" AND ("apcli_wps_gen_pincode" OR "mtkwifi.lua") AND ("system" OR "exec" OR "command")