CVE-2025-9583
📋 TL;DR
A command injection vulnerability in the ping_config function of Comfast CF-N1 firmware version 2.6.0 allows remote attackers to execute arbitrary commands on affected devices. This affects Comfast CF-N1 wireless access points running vulnerable firmware. Attackers can exploit this without authentication to gain control of the device.
💻 Affected Systems
- Comfast CF-N1
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing persistent backdoor installation, network pivoting, and data exfiltration.
Likely Case
Remote code execution leading to device takeover, configuration changes, and potential lateral movement within the network.
If Mitigated
Isolated impact limited to the vulnerable device if network segmentation and strict access controls are implemented.
🎯 Exploit Status
Public exploit code is available on GitHub, making exploitation straightforward for attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: Yes
Instructions:
1. Check Comfast website for firmware updates. 2. If update available, download and verify checksum. 3. Upload firmware via web interface. 4. Reboot device after update.
🔧 Temporary Workarounds
Network Access Restriction
linuxBlock external access to the web management interface
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -j DROP
Disable Web Management
linuxTemporarily disable the vulnerable web management service
killall webmgnt
chmod -x /usr/bin/webmgnt
🧯 If You Can't Patch
- Isolate affected devices in separate VLAN with strict firewall rules
- Implement network-based intrusion detection to monitor for exploitation attempts
🔍 How to Verify
Check if Vulnerable:
Check firmware version via web interface or SSH: cat /etc/version | grep 2.6.0Check Version:
cat /etc/versionVerify Fix Applied:
Verify firmware version is no longer 2.6.0 and test ping functionality with malicious payloads📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in system logs
- Multiple failed ping attempts with special characters
- webmgnt process spawning unexpected child processes
Network Indicators:
- HTTP POST requests to ping_config endpoint with shell metacharacters
- Outbound connections from device to unknown IPs
SIEM Query:
source="device_logs" AND (process="webmgnt" AND command="ping" AND (payload="|" OR payload=";" OR payload="`"))