CVE-2025-15459
📋 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/formUser endpoint. This affects all systems running the vulnerable firmware version. Attackers can launch attacks remotely without authentication.
💻 Affected Systems
- UTT 进取 520W router
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, and persistent backdoor installation.
Likely Case
Remote code execution allowing attackers to gain control of the router, intercept network traffic, and pivot to internal networks.
If Mitigated
Denial of service or limited impact if proper network segmentation and access controls are implemented.
🎯 Exploit Status
Proof-of-concept exploit code is publicly available on GitHub. The vulnerability requires no authentication and has straightforward exploitation.
🛠️ 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 affected devices with supported alternatives or implementing strict network controls.
🔧 Temporary Workarounds
Disable web management interface
allDisable the web management interface or restrict access to trusted IP addresses only
Router-specific configuration commands - consult device documentation
Network segmentation
linuxPlace affected routers in isolated network segments with strict firewall rules
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -j DROP
🧯 If You Can't Patch
- Implement strict network access controls to limit exposure to the router's management interface
- Monitor network traffic for exploitation attempts and implement intrusion detection rules
🔍 How to Verify
Check if Vulnerable:
Check router firmware version via web interface or SSH: cat /proc/version or check web admin panelCheck Version:
ssh admin@router_ip 'cat /proc/version' or check web interface at http://router_ipVerify Fix Applied:
Verify firmware version has been updated to a non-vulnerable version (if available)📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /goform/formUser with long password parameters
- Multiple failed login attempts followed by buffer overflow patterns
Network Indicators:
- HTTP POST requests to /goform/formUser with unusually long payloads
- Traffic patterns suggesting exploitation attempts
SIEM Query:
source="router_logs" AND uri="/goform/formUser" AND (content_length>100 OR contains(password, "AAAA"))