CVE-2024-22916
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code on affected D-LINK Go-RT-AC750 routers via a stack overflow in the cgibin component. Attackers can exploit this without authentication to gain full control of the device. All users of the vulnerable firmware version are affected.
💻 Affected Systems
- D-LINK Go-RT-AC750
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing persistent backdoor installation, network traffic interception, and lateral movement to other devices on the network.
Likely Case
Remote code execution leading to device takeover, credential theft, and botnet recruitment.
If Mitigated
Limited impact if device is behind firewall with restricted WAN access, though internal network attacks remain possible.
🎯 Exploit Status
Public proof-of-concept demonstrates reliable exploitation. The vulnerability requires no authentication and has straightforward exploitation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for latest patched version
Vendor Advisory: https://www.dlink.com/en/security-bulletin/
Restart Required: Yes
Instructions:
1. Visit D-LINK support website
2. Download latest firmware for Go-RT-AC750
3. Log into router admin interface
4. Navigate to firmware update section
5. Upload and apply new firmware
6. Reboot router after update completes
🔧 Temporary Workarounds
Disable WAN Access
allPlace router behind firewall or disable WAN administration to prevent external exploitation
Network Segmentation
allIsolate router on separate VLAN to limit lateral movement if compromised
🧯 If You Can't Patch
- Replace affected device with patched or different model
- Implement strict network access controls to isolate device from critical systems
🔍 How to Verify
Check if Vulnerable:
Check firmware version in router web interface or via SSH: cat /proc/versionCheck Version:
cat /proc/version or check web interface firmware versionVerify Fix Applied:
Verify firmware version matches patched version from vendor advisory📡 Detection & Monitoring
Log Indicators:
- Unusual cgibin process crashes
- Suspicious HTTP requests to router management interface
- Unexpected firmware modification attempts
Network Indicators:
- Unusual outbound connections from router
- Traffic patterns suggesting command and control communication
- Port scanning originating from router
SIEM Query:
source="router_logs" AND ("cgibin" OR "sprintf") AND ("crash" OR "overflow")