CVE-2025-14191
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code on UTT 512W routers through a buffer overflow in the formP2PLimitConfig function. Attackers can exploit this without authentication to potentially take full control of affected devices. All users of UTT 512W routers up to version 1.7.7-171114 are affected.
💻 Affected Systems
- UTT 512W router
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete device compromise, data theft, network pivoting, and persistent backdoor installation.
Likely Case
Remote code execution allowing attackers to modify device configuration, intercept traffic, or use device as botnet member.
If Mitigated
Denial of service if exploit fails or is blocked by network controls, but device remains vulnerable.
🎯 Exploit Status
Proof-of-concept exploit code is publicly available on GitHub. The vulnerability is remotely exploitable without authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: Yes
Instructions:
No official patch available. Contact vendor UTT for firmware updates. Consider replacing affected devices if vendor is unresponsive.
🔧 Temporary Workarounds
Network Segmentation
allIsolate affected routers from critical networks and internet access
Access Control Lists
linuxBlock access to router web interface from untrusted networks
iptables -A INPUT -p tcp --dport 80 -s ! TRUSTED_NETWORK -j DROP
iptables -A INPUT -p tcp --dport 443 -s ! TRUSTED_NETWORK -j DROP
🧯 If You Can't Patch
- Immediately remove affected devices from internet-facing positions
- Implement strict network segmentation and monitor for exploitation attempts
🔍 How to Verify
Check if Vulnerable:
Check firmware version via web interface at http://router-ip/ or via SSH if enabled. Compare version against affected range.Check Version:
curl -s http://router-ip/ | grep -i 'firmware\|version' or check web interface System Status pageVerify Fix Applied:
No fix available to verify. Monitor vendor for firmware updates.📡 Detection & Monitoring
Log Indicators:
- Multiple POST requests to /goform/formP2PLimitConfig
- Unusual process execution in router logs
- Configuration changes without authorization
Network Indicators:
- Unusual outbound connections from router
- Traffic patterns suggesting command and control communication
- Exploit payloads in HTTP requests to router
SIEM Query:
source="router_logs" AND (url="/goform/formP2PLimitConfig" OR process="unusual_executable")🔗 References
- https://github.com/DavCloudz/cve/blob/main/UTT/512W/UTT%20512W%20Buffer%20Overflow%20Vulnerability.md
- https://github.com/DavCloudz/cve/blob/main/UTT/512W/UTT%20512W%20Buffer%20Overflow%20Vulnerability.md#poc
- https://vuldb.com/?ctiid.334611
- https://vuldb.com/?id.334611
- https://vuldb.com/?submit.699220
