CVE-2026-2194
📋 TL;DR
This CVE describes a command injection vulnerability in D-Link DI-7100G C1 routers that allows remote attackers to execute arbitrary commands on affected devices. The vulnerability exists in the start_proxy_client_email function and can be exploited without authentication. Organizations using these routers are at risk of compromise.
💻 Affected Systems
- D-Link DI-7100G C1
⚠️ Risk & Real-World Impact
Worst Case
Complete device takeover leading to network compromise, data exfiltration, and use as pivot point for lateral movement.
Likely Case
Router compromise allowing attacker to intercept traffic, modify configurations, or deploy malware.
If Mitigated
Limited impact if device is isolated, properly segmented, and monitored for suspicious activity.
🎯 Exploit Status
Exploit details are publicly available on GitHub, making exploitation straightforward for attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.dlink.com/
Restart Required: Yes
Instructions:
1. Check D-Link website for firmware updates. 2. Download latest firmware. 3. Upload via web interface. 4. Reboot device.
🔧 Temporary Workarounds
Disable remote management
allPrevent external access to vulnerable interface
Access router web interface > Administration > Remote Management > Disable
Network segmentation
allIsolate router from critical network segments
🧯 If You Can't Patch
- Implement strict network access controls to limit exposure
- Monitor for suspicious command execution patterns and network traffic
🔍 How to Verify
Check if Vulnerable:
Check firmware version in router web interface under Maintenance > FirmwareCheck Version:
curl -s http://router-ip/status.html | grep FirmwareVerify Fix Applied:
Verify firmware version is updated beyond 24.04.18D1📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in system logs
- Unexpected process creation
Network Indicators:
- Suspicious HTTP requests to start_proxy_client_email endpoint
- Unexpected outbound connections from router
SIEM Query:
source="router-logs" AND ("start_proxy_client_email" OR "command injection")