CVE-2025-0356
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary operating system commands on affected NEC Aterm routers via network access. Attackers can potentially gain full control of the device. Affected systems include NEC Aterm WX1500HP and WX3600HP routers running vulnerable firmware versions.
💻 Affected Systems
- NEC Aterm WX1500HP
- NEC Aterm WX3600HP
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of router with persistent backdoor installation, credential theft, network traffic interception, and lateral movement to internal networks.
Likely Case
Router takeover leading to network disruption, DNS hijacking, credential harvesting, and potential data exfiltration.
If Mitigated
Limited impact if network segmentation isolates routers and strict access controls prevent unauthorized network access.
🎯 Exploit Status
Exploitation requires network access to the router but no authentication. The CWE-78 (OS Command Injection) suggests attackers can inject commands through vulnerable parameters.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: WX1500HP: Update to version newer than 1.4.2, WX3600HP: Update to version newer than 1.5.3
Vendor Advisory: https://jpn.nec.com/security-info/secinfo/nv25-003_en.html
Restart Required: Yes
Instructions:
1. Download latest firmware from NEC support portal. 2. Log into router admin interface. 3. Navigate to firmware update section. 4. Upload and apply new firmware. 5. Router will automatically restart after update.
🔧 Temporary Workarounds
Network Segmentation
allIsolate routers in separate network segments with strict firewall rules limiting access to management interfaces.
Access Control Lists
allImplement ACLs to restrict management interface access to trusted IP addresses only.
🧯 If You Can't Patch
- Immediately isolate affected routers from internet and critical internal networks
- Implement strict network monitoring and alerting for suspicious command execution attempts
🔍 How to Verify
Check if Vulnerable:
Check router firmware version via admin web interface under System Information or Status page.Check Version:
Login to router admin interface and navigate to System Status or Firmware Information pageVerify Fix Applied:
Verify firmware version shows newer than vulnerable versions: WX1500HP > 1.4.2, WX3600HP > 1.5.3📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in system logs
- Multiple failed login attempts followed by successful access
- Unexpected system process creation
Network Indicators:
- Unusual outbound connections from router
- DNS queries to suspicious domains
- Unexpected traffic patterns from router
SIEM Query:
source="router_logs" AND (event_type="command_execution" OR process="unusual_process")