CVE-2024-54751
📋 TL;DR
COMFAST CF-WR630AX routers version 2.7.0.2 contain a hardcoded root password in /etc/shadow, allowing attackers to gain complete administrative control. This affects all devices running this vulnerable firmware version. Attackers can use this password to log in as root without authentication.
💻 Affected Systems
- COMFAST CF-WR630AX
⚠️ 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 attackers to intercept all network traffic, install persistent malware, pivot to internal networks, and brick the device.
Likely Case
Attackers gain root access to modify configurations, intercept sensitive data, and use the device as a foothold for further attacks.
If Mitigated
With proper network segmentation and access controls, impact is limited to the device itself, though it still provides a foothold.
🎯 Exploit Status
Attackers simply need to attempt SSH/Telnet login with the hardcoded password. No special tools or skills required.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None found
Restart Required: Yes
Instructions:
1. Check COMFAST website for firmware updates. 2. If available, download and flash new firmware. 3. Factory reset device after update. 4. Change all passwords.
🔧 Temporary Workarounds
Change root password
linuxManually change the root password via SSH/Telnet if accessible
passwd root
Disable remote management
allTurn off SSH/Telnet/WEB management from WAN interface
🧯 If You Can't Patch
- Isolate device in separate VLAN with strict firewall rules
- Implement network monitoring for suspicious authentication attempts
🔍 How to Verify
Check if Vulnerable:
SSH/Telnet to device and attempt login with hardcoded password (check reference for specific password)Check Version:
cat /etc/version or check web interfaceVerify Fix Applied:
Attempt to login with old hardcoded password - should fail. Verify firmware version is updated.📡 Detection & Monitoring
Log Indicators:
- Failed SSH/Telnet login attempts
- Successful root login from unusual IPs
- Configuration changes
Network Indicators:
- SSH/Telnet connections to router from external IPs
- Unusual outbound connections from router
SIEM Query:
source="router_logs" (event="authentication success" user="root") OR (event="configuration change")