CVE-2024-40119
📋 TL;DR
This CSRF vulnerability in Nepstech Wifi Router xpon (terminal) allows attackers to trick authenticated users into unknowingly changing the admin password via malicious web requests. This leads to complete account takeover of the router's administrative interface. All users of the affected router model and firmware are vulnerable.
💻 Affected Systems
- Nepstech Wifi Router xpon (terminal) model NTPL-Xpon1GFEVN
⚠️ 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 router compromise allowing attacker to change all settings, intercept traffic, deploy malware to connected devices, and lock legitimate administrators out permanently.
Likely Case
Attacker gains administrative access to router, enabling network traffic monitoring, DNS hijacking, and potential access to connected devices.
If Mitigated
With proper CSRF protections and network segmentation, impact limited to isolated router management interface only.
🎯 Exploit Status
Exploit requires victim to be logged into router admin interface and visit attacker-controlled website. Proof-of-concept available on GitHub.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Check vendor website for firmware updates. If update available: 1. Download firmware from official vendor site. 2. Log into router admin interface. 3. Navigate to firmware update section. 4. Upload and apply new firmware. 5. Verify version after reboot.
🔧 Temporary Workarounds
Enable CSRF Protection via Router Settings
allCheck if router has CSRF protection settings and enable them if available
Use Separate Browser for Router Admin
allUse dedicated browser or incognito mode only for router administration to prevent session persistence
🧯 If You Can't Patch
- Disable remote administration (WAN access to admin interface)
- Implement network segmentation to isolate router management interface
🔍 How to Verify
Check if Vulnerable:
Check router firmware version via admin interface. If version is V2.0.1 on NTPL-Xpon1GFEVN model, system is vulnerable.Check Version:
Log into router web interface and check System Status or About page for firmware versionVerify Fix Applied:
Verify firmware version has changed from V2.0.1. Test password change function with CSRF token requirement.📡 Detection & Monitoring
Log Indicators:
- Multiple failed login attempts followed by successful password change
- Password change requests from unusual IP addresses
Network Indicators:
- HTTP POST requests to password change endpoint without referrer headers
- Unusual outbound connections from router after admin password change
SIEM Query:
source="router_logs" AND (event="password_change" OR event="admin_password_reset") AND NOT referrer="router_ip/admin"