CVE-2025-14631
📋 TL;DR
A NULL pointer dereference vulnerability in TP-Link Archer BE400 routers allows attackers on the same network to trigger a denial-of-service condition by causing the device to reboot. This affects users of TP-Link Archer BE400 V1 routers with specific firmware versions. The vulnerability requires physical or network adjacency to the target device.
💻 Affected Systems
- TP-Link Archer BE400 V1
⚠️ 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
Persistent attacker could repeatedly reboot the router, causing extended network downtime and disrupting all connected devices.
Likely Case
Temporary network disruption for all connected devices until router automatically restarts and re-establishes connections.
If Mitigated
Minimal impact if router is in isolated network segment or behind additional security controls.
🎯 Exploit Status
NULL pointer dereference vulnerabilities typically require specific malformed input but are often straightforward to trigger once identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: https://www.tp-link.com/us/support/faq/4871/
Restart Required: Yes
Instructions:
1. Check TP-Link support page for firmware updates. 2. Download latest firmware. 3. Log into router admin interface. 4. Navigate to System Tools > Firmware Upgrade. 5. Upload and install new firmware. 6. Wait for router to reboot.
🔧 Temporary Workarounds
Network Segmentation
allIsolate the router from untrusted devices using VLANs or separate physical networks
Disable Unused Wireless Features
allTurn off any unnecessary wireless services or protocols that might be attack vectors
🧯 If You Can't Patch
- Place router in physically secure location to prevent unauthorized network access
- Implement network monitoring to detect repeated reboot patterns or unusual traffic
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in admin interface under System Tools > Firmware UpgradeCheck Version:
Log into router web interface and navigate to System Tools > Firmware UpgradeVerify Fix Applied:
Verify firmware version is newer than xi 1.1.0 Build 20250710 rel.14914📡 Detection & Monitoring
Log Indicators:
- Unexpected router reboots
- System crash logs
- NULL pointer references in debug logs
Network Indicators:
- Sudden loss of connectivity followed by router restart
- Unusual traffic patterns to router management interface
SIEM Query:
source="router_logs" AND ("reboot" OR "crash" OR "NULL pointer")