CVE-2025-14709
📋 TL;DR
A buffer overflow vulnerability in the Shiguangwu sgwbox N3 NAS device allows remote attackers to execute arbitrary code by manipulating parameters in the WIRELESSCFGGET interface. This affects version 2.0.25 of the device firmware. The vulnerability is remotely exploitable without authentication and has a public exploit available.
💻 Affected Systems
- Shiguangwu sgwbox N3 NAS
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete device compromise, data theft, and potential lateral movement within the network.
Likely Case
Remote attackers gain shell access to the NAS device, allowing data exfiltration, ransomware deployment, or use as a pivot point for further attacks.
If Mitigated
If properly segmented and monitored, exploitation could be detected and contained before significant damage occurs.
🎯 Exploit Status
Public exploit code is available, making this easily weaponizable by attackers with basic skills.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: Yes
Instructions:
No official patch available. Contact vendor for updates or consider replacing the device.
🔧 Temporary Workarounds
Block WIRELESSCFGGET Interface
linuxUse firewall rules to block access to the vulnerable interface
iptables -A INPUT -p tcp --dport [PORT] -j DROP
Disable Wireless Configuration Service
linuxStop the vulnerable http_eshell_server service if possible
killall http_eshell_server
systemctl disable http_eshell_server
🧯 If You Can't Patch
- Immediately isolate the device from internet access and place it in a restricted network segment
- Implement strict network monitoring and IDS/IPS rules to detect exploitation attempts
🔍 How to Verify
Check if Vulnerable:
Check device firmware version via web interface or SSH: cat /etc/versionCheck Version:
cat /etc/versionVerify Fix Applied:
Verify service is not running: ps aux | grep http_eshell_server📡 Detection & Monitoring
Log Indicators:
- Unusual process execution from http_eshell_server
- Buffer overflow error messages in system logs
Network Indicators:
- Unusual traffic to wireless configuration port
- Large parameter payloads in HTTP requests
SIEM Query:
source="sgwbox" AND (process="http_eshell_server" OR message="*buffer*overflow*")