CVE-2025-15160
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code on Tenda WH450 routers via a stack-based buffer overflow in the PPTPServer component. Attackers can exploit this by sending specially crafted requests to the vulnerable endpoint. All users running the affected firmware version are at risk.
💻 Affected Systems
- Tenda WH450
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise leading to remote code execution, network takeover, and potential lateral movement to connected devices.
Likely Case
Router compromise allowing attackers to intercept traffic, modify DNS settings, or create persistent backdoors.
If Mitigated
Limited impact if device is behind firewall with restricted WAN access and proper network segmentation.
🎯 Exploit Status
Public proof-of-concept exists on GitHub, making exploitation straightforward for attackers with basic skills.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.tenda.com.cn/
Restart Required: Yes
Instructions:
1. Check Tenda website for firmware updates. 2. Download latest firmware. 3. Log into router admin interface. 4. Navigate to firmware upgrade section. 5. Upload and apply new firmware. 6. Reboot router.
🔧 Temporary Workarounds
Disable PPTP Server
allTurn off the vulnerable PPTP server component if not required
Network Segmentation
allIsolate router management interface from untrusted networks
🧯 If You Can't Patch
- Replace affected router with different model or vendor
- Implement strict firewall rules blocking access to port 1723 and router management interface from untrusted networks
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in admin interface. If version is 1.0.0.18, device is vulnerable.Check Version:
Login to router admin interface and check System Status or Firmware Version pageVerify Fix Applied:
After firmware update, verify version number has changed from 1.0.0.18 and test PPTP functionality if required.📡 Detection & Monitoring
Log Indicators:
- Unusual PPTP connection attempts
- Multiple failed authentication attempts to router admin
- Unexpected firmware or configuration changes
Network Indicators:
- Traffic to port 1723 (PPTP) with malformed packets
- Unusual outbound connections from router
- DNS hijacking or redirect patterns
SIEM Query:
source="router_logs" AND ("PPTP" OR "goform/PPTPServer") AND status="error"