CVE-2026-2066
📋 TL;DR
A buffer overflow vulnerability exists in the UTT 进取 520W router firmware version 1.7.7-180627, specifically in the formIpGroupConfig function. Attackers can remotely exploit this by manipulating the groupName parameter to execute arbitrary code or crash the device. This affects users of this specific router model and firmware version.
💻 Affected Systems
- UTT 进取 520W router
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete device compromise, network infiltration, data theft, or persistent backdoor installation.
Likely Case
Device crash causing denial of service, or limited code execution allowing network reconnaissance and lateral movement.
If Mitigated
Denial of service from crash if exploit fails, with no further compromise due to network segmentation and monitoring.
🎯 Exploit Status
Public proof-of-concept available on GitHub; remote exploitation without authentication makes weaponization likely.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None
Restart Required: No
Instructions:
No official patch available; vendor did not respond to disclosure. Consider replacing device or implementing workarounds.
🔧 Temporary Workarounds
Block access to vulnerable endpoint
linuxUse firewall rules to block external and internal access to the /goform/formIpGroupConfig endpoint.
iptables -A INPUT -p tcp --dport 80 -m string --string "/goform/formIpGroupConfig" --algo bm -j DROP
iptables -A INPUT -p tcp --dport 443 -m string --string "/goform/formIpGroupConfig" --algo bm -j DROP
Network segmentation
allIsolate the router on a dedicated VLAN with strict access controls to limit attack surface.
🧯 If You Can't Patch
- Replace the router with a supported model from a responsive vendor.
- Implement strict network monitoring and intrusion detection for exploit attempts.
🔍 How to Verify
Check if Vulnerable:
Check router web interface or CLI for firmware version; if version is 1.7.7-180627, it is vulnerable.Check Version:
Login to router admin interface and check System Status or Firmware page, or use CLI command if available.Verify Fix Applied:
No fix available to verify; monitor for vendor updates or test with non-destructive PoC if safe.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /goform/formIpGroupConfig with long groupName parameters
- Router crash logs or reboots
Network Indicators:
- Traffic to router on port 80/443 with suspicious payloads in groupName field
- Sudden loss of connectivity from router
SIEM Query:
source="router_logs" AND uri="/goform/formIpGroupConfig" AND (groupName.length > 100 OR status=500)