CVE-2025-58116
📋 TL;DR
This CVE describes an OS command injection vulnerability in I-O DATA WN-7D36QR and WN-7D36QR/UE wireless LAN routers. Remote authenticated attackers can execute arbitrary operating system commands on affected devices. Organizations using these specific router models are at risk.
💻 Affected Systems
- I-O DATA WN-7D36QR
- I-O DATA WN-7D36QR/UE
⚠️ 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 device compromise allowing installation of persistent backdoors, credential theft, lateral movement to internal networks, and use as attack launchpad.
Likely Case
Attacker gains shell access to router, modifies configurations, intercepts network traffic, and potentially pivots to connected systems.
If Mitigated
Limited impact due to network segmentation, strong authentication controls, and restricted user privileges preventing command execution.
🎯 Exploit Status
Exploitation requires authenticated access but command injection is typically straightforward once authentication is bypassed or obtained
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific firmware version
Vendor Advisory: https://www.iodata.jp/support/information/2025/09_wn-7d36qr/index.htm
Restart Required: Yes
Instructions:
1. Download latest firmware from I-O DATA support site. 2. Log into router web interface. 3. Navigate to firmware update section. 4. Upload and apply firmware update. 5. Reboot router.
🔧 Temporary Workarounds
Restrict Management Access
linuxLimit router management interface access to specific trusted IP addresses only
iptables -A INPUT -p tcp --dport 80 -s TRUSTED_IP -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -s TRUSTED_IP -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -j DROP
Disable Remote Management
allTurn off remote administration features if not required
🧯 If You Can't Patch
- Segment affected routers in isolated network zones with strict firewall rules
- Implement multi-factor authentication for router administration and monitor for suspicious authentication attempts
🔍 How to Verify
Check if Vulnerable:
Check current firmware version against vendor advisory. Look for injection attempts in web interface logs.Check Version:
Check router web interface status page or use: cat /proc/version (if shell access available)Verify Fix Applied:
Verify firmware version matches patched version from vendor advisory. Test web interface inputs for command injection.📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in system logs
- Multiple failed authentication attempts followed by successful login
- Web interface requests containing shell metacharacters like ;, |, &, $()
Network Indicators:
- Unexpected outbound connections from router
- DNS queries to suspicious domains from router
- Unusual traffic patterns from router management interface
SIEM Query:
source="router_logs" AND ("cmd.exe" OR "/bin/sh" OR ";" OR "|" OR "&" OR "$(")