CVE-2025-14708
📋 TL;DR
A remote buffer overflow vulnerability exists in Shiguangwu sgwbox N3 devices version 2.0.25 through the WIREDCFGGET interface. Attackers can exploit this to execute arbitrary code or crash the system by sending specially crafted requests to the http_eshell_server component. This affects all users running the vulnerable version of sgwbox N3 NAS devices.
💻 Affected Systems
- Shiguangwu sgwbox N3
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with remote code execution, allowing attackers to install malware, steal data, or use the device as part of a botnet.
Likely Case
Remote code execution leading to device takeover, data theft, or denial of service through system crashes.
If Mitigated
Denial of service through system crashes if exploit attempts are blocked but still trigger the vulnerability.
🎯 Exploit Status
The exploit is publicly available and the vulnerability requires no authentication, making exploitation straightforward for attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: No
Instructions:
No official patch is available. The vendor has not responded to disclosure attempts. Consider workarounds or replacement.
🔧 Temporary Workarounds
Block WIREDCFGGET Interface Access
linuxUse firewall rules to block access to the vulnerable interface on port 80/443
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -j DROP
Disable http_eshell_server Service
linuxStop and disable the vulnerable service if not required
systemctl stop http_eshell_server
systemctl disable http_eshell_server
🧯 If You Can't Patch
- Isolate the device on a separate network segment with strict firewall rules
- Implement network-based intrusion detection to monitor for exploit attempts
🔍 How to Verify
Check if Vulnerable:
Check device version via web interface or SSH: cat /etc/version or check web admin panelCheck Version:
cat /etc/version || grep -i version /etc/*releaseVerify Fix Applied:
Verify service is stopped: systemctl status http_eshell_server should show inactive📡 Detection & Monitoring
Log Indicators:
- Unusual HTTP requests to /usr/sbin/http_eshell_server
- Segmentation fault or crash logs from http_eshell_server
Network Indicators:
- Unusual traffic patterns to device port 80/443 with buffer overflow patterns
SIEM Query:
source="sgwbox" AND (event="segmentation fault" OR event="buffer overflow")