CVE-2026-2904
📋 TL;DR
A buffer overflow vulnerability in the UTT HiPER 810G router's web interface allows remote attackers to execute arbitrary code by exploiting the strcpy function. This affects all systems running version 1.7.7-171114 of the firmware. Attackers can compromise the router without authentication.
💻 Affected Systems
- UTT HiPER 810G
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise leading to router takeover, network traffic interception, lateral movement to internal systems, and persistent backdoor installation.
Likely Case
Router compromise leading to network disruption, credential theft, and potential pivot point for attacking internal systems.
If Mitigated
Limited impact if network segmentation prevents lateral movement and external access is restricted.
🎯 Exploit Status
Exploit details are publicly disclosed and the vulnerability is in a commonly exploited function (strcpy).
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: Yes
Instructions:
Check vendor website for firmware updates. If available, download latest firmware and apply through web interface. No specific patch version is known for this CVE.
🔧 Temporary Workarounds
Disable Remote Management
allDisable web management interface access from external networks
Access router web interface > Administration > Remote Management > Disable
Network Segmentation
allPlace router on isolated management VLAN with strict access controls
🧯 If You Can't Patch
- Replace affected router with supported model
- Implement strict firewall rules to block all external access to router management interface
🔍 How to Verify
Check if Vulnerable:
Check firmware version in router web interface: Login > System > Firmware Upgrade. If version is 1.7.7-171114, system is vulnerable.Check Version:
No CLI command available. Must check through web interface.Verify Fix Applied:
Verify firmware version has been updated to a version later than 1.7.7-171114📡 Detection & Monitoring
Log Indicators:
- Multiple failed login attempts to /goform/ConfigExceptAli
- Unusual POST requests to router management interface
- Buffer overflow patterns in web server logs
Network Indicators:
- External IP addresses accessing router management port (typically 80/443)
- Unusual traffic patterns to router from external sources
SIEM Query:
source="router_logs" AND (uri="/goform/ConfigExceptAli" OR message="buffer overflow" OR message="strcpy")