CVE-2025-10953
📋 TL;DR
This is a remote buffer overflow vulnerability in UTT 1200GW and 1250GW routers affecting the formApMail endpoint. Attackers can exploit this by sending specially crafted senderEmail parameters to potentially execute arbitrary code or crash devices. Organizations using these specific router models with vulnerable firmware are affected.
💻 Affected Systems
- UTT 1200GW
- UTT 1250GW
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete device compromise, lateral movement into internal networks, and persistent backdoor installation.
Likely Case
Device crash causing denial of service, potential information disclosure, or limited code execution depending on exploit sophistication.
If Mitigated
Denial of service from device crash if exploit attempts are blocked or fail, with no further network penetration.
🎯 Exploit Status
Exploit code is publicly available on GitHub. The vulnerability requires no authentication and has simple exploitation vectors.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: Yes
Instructions:
No official patch available. Contact vendor for updated firmware. If unavailable, implement workarounds or replace devices.
🔧 Temporary Workarounds
Network Access Control
linuxBlock external access to router management interfaces and restrict internal access to authorized IPs only.
iptables -A INPUT -p tcp --dport 80 -s 192.168.1.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP
Web Application Firewall
allDeploy WAF rules to block requests containing buffer overflow patterns targeting /goform/formApMail endpoint.
🧯 If You Can't Patch
- Isolate affected routers in separate network segments with strict firewall rules
- Monitor for exploit attempts and implement intrusion detection for buffer overflow patterns
🔍 How to Verify
Check if Vulnerable:
Check router firmware version via web interface or SSH. If version is 3.0.0-170831 or 3.2.2-200710 or earlier, device is vulnerable.Check Version:
ssh admin@router-ip 'cat /etc/version' or check web interface System Status pageVerify Fix Applied:
Verify firmware version is newer than affected versions. Test endpoint with safe payloads to confirm buffer overflow protections.📡 Detection & Monitoring
Log Indicators:
- HTTP requests to /goform/formApMail with unusually long senderEmail parameters
- Router crash/reboot logs
- Memory violation errors in system logs
Network Indicators:
- HTTP POST requests to /goform/formApMail with senderEmail parameter exceeding normal length
- Traffic patterns suggesting buffer overflow exploitation
SIEM Query:
source="router_logs" AND (uri="/goform/formApMail" AND senderEmail.length>100)