CVE-2025-14737
📋 TL;DR
This CVE describes a command injection vulnerability in TP-Link WA850RE range extenders' httpd modules. Authenticated attackers on the same network can execute arbitrary commands on the device. Affected devices are WA850RE V2 and V3 with firmware versions up to specified dates.
💻 Affected Systems
- TP-Link WA850RE
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing persistent backdoor installation, network pivoting to other devices, and data exfiltration.
Likely Case
Local network compromise, device configuration changes, denial of service, and credential harvesting.
If Mitigated
Limited impact due to network segmentation and strong authentication controls.
🎯 Exploit Status
Exploit details published in Exodus Intelligence blog. Requires authenticated access to web interface.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Firmware versions after WA850RE V2_160527 and V3_160922
Vendor Advisory: https://www.tp-link.com/us/support/faq/4848/
Restart Required: Yes
Instructions:
1. Download latest firmware from TP-Link support site. 2. Log into device web interface. 3. Navigate to System Tools > Firmware Upgrade. 4. Upload firmware file. 5. Wait for automatic reboot.
🔧 Temporary Workarounds
Network Segmentation
allIsolate WA850RE devices on separate VLAN from critical systems
Access Control
allRestrict web interface access to trusted management IPs only
🧯 If You Can't Patch
- Physically disconnect from network if not essential
- Implement strict firewall rules blocking all unnecessary traffic to/from device
🔍 How to Verify
Check if Vulnerable:
Check firmware version in web interface under System Tools > Firmware UpgradeCheck Version:
Not applicable - check via web interface onlyVerify Fix Applied:
Confirm firmware version is newer than affected versions listed in CVE📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in system logs
- Multiple failed authentication attempts followed by successful login
Network Indicators:
- Unusual outbound connections from WA850RE
- HTTP requests with command injection patterns to device web interface
SIEM Query:
source_ip=WA850RE_IP AND (http_uri CONTAINS ";" OR http_uri CONTAINS "|" OR http_uri CONTAINS "`")