CVE-2026-2071
📋 TL;DR
A buffer overflow vulnerability in UTT 进取 520W firmware version 1.7.7-180627 allows remote attackers to execute arbitrary code by exploiting the strcpy function in the /goform/formP2PLimitConfig endpoint. This affects users of this specific router model running the vulnerable firmware. The vulnerability is remotely exploitable and public exploit code exists.
💻 Affected Systems
- UTT 进取 520W router
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete device compromise, network infiltration, and potential lateral movement to connected systems.
Likely Case
Remote code execution allowing attackers to take control of the router, intercept traffic, or use it as a foothold for further attacks.
If Mitigated
Limited impact if device is behind strict network segmentation and firewalls, though still vulnerable to internal threats.
🎯 Exploit Status
Exploit code is publicly available on GitHub. The vulnerability requires no authentication and has a straightforward exploitation path.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available - vendor did not respond to disclosure
Restart Required: Yes
Instructions:
No official patch available. Consider replacing the device or implementing strict network controls.
🔧 Temporary Workarounds
Network Segmentation
allIsolate the router from critical network segments and restrict access to management interfaces.
Access Control Lists
linuxImplement strict firewall rules to block external access to the vulnerable endpoint.
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -j DROP
🧯 If You Can't Patch
- Replace the vulnerable device with a supported model from a responsive vendor
- Implement network monitoring and intrusion detection specifically for this device
🔍 How to Verify
Check if Vulnerable:
Check router web interface or CLI for firmware version. If version is 1.7.7-180627, device is vulnerable.Check Version:
Check router web interface at http://[router-ip] or use telnet/ssh if availableVerify Fix Applied:
No fix available to verify. Consider device replacement as primary remediation.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /goform/formP2PLimitConfig
- Multiple failed buffer overflow attempts
- Unexpected device reboots or crashes
Network Indicators:
- Unusual traffic patterns from router IP
- Exploit payloads in HTTP requests to router management interface
SIEM Query:
source="router_logs" AND (uri="/goform/formP2PLimitConfig" OR message="buffer overflow")