CVE-2024-40087
📋 TL;DR
Vilo 5 Mesh WiFi System versions up to 5.16.1.33 have an insecure custom TCP service on port 5432 that lacks authentication. Remote attackers can exploit this to gain administrative router access without credentials. All users running vulnerable firmware versions are affected.
💻 Affected Systems
- Vilo 5 Mesh WiFi System
📦 What is this software?
Vilo 5 Firmware by Viloliving
⚠️ Risk & Real-World Impact
Worst Case
Complete router compromise allowing attackers to intercept all network traffic, install malware, change DNS settings, and pivot to connected devices.
Likely Case
Attackers gain administrative control over the router to monitor traffic, change network settings, or launch attacks against connected devices.
If Mitigated
With proper network segmentation and firewall rules, impact is limited to the router itself without lateral movement.
🎯 Exploit Status
Exploitation requires only network access to port 5432. The GitHub reference contains technical details.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: > 5.16.1.33
Vendor Advisory: http://vilo.com
Restart Required: Yes
Instructions:
1. Log into Vilo admin interface. 2. Check for firmware updates. 3. Apply any available update to version >5.16.1.33. 4. Reboot the router after update.
🔧 Temporary Workarounds
Block port 5432 at firewall
linuxPrevent external access to the vulnerable service
iptables -A INPUT -p tcp --dport 5432 -j DROP
Disable remote administration
allTurn off remote management features in router settings
🧯 If You Can't Patch
- Segment the Vilo router on an isolated network VLAN
- Implement strict firewall rules blocking all inbound traffic to port 5432
🔍 How to Verify
Check if Vulnerable:
Use nmap to scan for open port 5432: nmap -p 5432 <router_ip>Check Version:
Check router admin interface or use curl to query version endpoint if availableVerify Fix Applied:
Check firmware version in admin interface is >5.16.1.33 and port 5432 is no longer accessible📡 Detection & Monitoring
Log Indicators:
- Unusual connections to port 5432
- Failed authentication attempts on admin interface after port 5432 access
Network Indicators:
- Unexpected TCP connections to port 5432 from external IPs
- Traffic spikes on port 5432
SIEM Query:
source_port=5432 OR dest_port=5432 | stats count by src_ip, dest_ip