CVE-2024-39607
📋 TL;DR
CVE-2024-39607 is an OS command injection vulnerability in ELECOM wireless LAN routers that allows authenticated administrators to execute arbitrary operating system commands. This vulnerability enables complete device compromise and potential network infiltration. Only users with administrative privileges can exploit this vulnerability.
💻 Affected Systems
- ELECOM wireless LAN routers
⚠️ 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 router takeover leading to network compromise, credential theft, man-in-the-middle attacks, and lateral movement to connected devices.
Likely Case
Router configuration manipulation, network traffic interception, and installation of persistent backdoors.
If Mitigated
Limited impact if administrative access is restricted and network segmentation is implemented.
🎯 Exploit Status
Exploitation requires administrative credentials. No public exploit code available as of analysis.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific firmware versions
Vendor Advisory: https://www.elecom.co.jp/news/security/20240730-01/
Restart Required: Yes
Instructions:
1. Access router admin interface
2. Navigate to firmware update section
3. Download latest firmware from ELECOM website
4. Upload and apply firmware update
5. Reboot router after update completes
🔧 Temporary Workarounds
Restrict Administrative Access
allLimit administrative access to trusted IP addresses only
Configure router firewall to restrict admin interface access to specific IP ranges
Change Default Credentials
allEnsure strong, unique administrative passwords are used
Change admin password via router web interface
🧯 If You Can't Patch
- Isolate router on separate VLAN with strict network segmentation
- Implement network monitoring for unusual router administrative access patterns
🔍 How to Verify
Check if Vulnerable:
Check router firmware version against affected versions in ELECOM advisoryCheck Version:
Check router web interface under System Status or Firmware InformationVerify Fix Applied:
Verify firmware version has been updated to patched version listed in vendor advisory📡 Detection & Monitoring
Log Indicators:
- Unusual administrative login patterns
- Multiple failed login attempts followed by successful login
- Router configuration changes from unexpected sources
Network Indicators:
- Unusual outbound connections from router
- Router communicating with unexpected external IPs
- DNS or routing table modifications
SIEM Query:
source="router_logs" AND (event_type="admin_login" OR event_type="config_change") AND src_ip NOT IN [trusted_admin_ips]