CVE-2026-0837
📋 TL;DR
A buffer overflow vulnerability in the UTT 进取 520W router firmware version 1.7.7-180627 allows remote attackers to execute arbitrary code by exploiting the strcpy function in the /goform/formFireWall endpoint. This affects users of this specific router model and firmware version. The vulnerability is remotely exploitable and has public exploit code available.
💻 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 other systems.
Likely Case
Device takeover enabling traffic interception, credential theft, and use as a botnet node.
If Mitigated
Limited impact if device is isolated behind firewalls with strict network segmentation.
🎯 Exploit Status
Exploit code is publicly available on GitHub. No authentication required to reach vulnerable endpoint.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: No
Instructions:
No official patch available. Vendor has not responded to disclosure. Consider replacing device or implementing workarounds.
🔧 Temporary Workarounds
Block access to vulnerable endpoint
linuxUse firewall rules to block access to /goform/formFireWall endpoint
iptables -A INPUT -p tcp --dport 80 -m string --string "/goform/formFireWall" --algo bm -j DROP
iptables -A INPUT -p tcp --dport 443 -m string --string "/goform/formFireWall" --algo bm -j DROP
Disable web management interface
allTurn off remote web management if not required
🧯 If You Can't Patch
- Isolate device in separate VLAN with strict firewall rules
- Implement network monitoring for exploit attempts and anomalous traffic
🔍 How to Verify
Check if Vulnerable:
Check router firmware version via web interface at System Status or similar menu. Version should be 1.7.7-180627.Check Version:
curl -s http://router-ip/ | grep -i version or check web interfaceVerify Fix Applied:
No official fix available to verify. Verify workarounds by testing blocked access to /goform/formFireWall endpoint.📡 Detection & Monitoring
Log Indicators:
- Multiple requests to /goform/formFireWall with long parameters
- Device crash/restart logs
Network Indicators:
- Unusual outbound connections from router
- Traffic patterns suggesting device compromise
SIEM Query:
source="router.logs" AND uri="/goform/formFireWall" AND (param_length>100 OR status=500)