CVE-2022-45553
📋 TL;DR
This vulnerability allows attackers to execute arbitrary commands on Shenzhen Zhibotong Electronics WBT WE1626 routers by connecting to the UART serial port. Attackers with physical access to the device can gain complete control. Only users of this specific router model are affected.
💻 Affected Systems
- Shenzhen Zhibotong Electronics WBT WE1626 Router
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing attacker to install persistent malware, intercept all network traffic, pivot to internal networks, and use the router as a botnet node.
Likely Case
Local attacker gains administrative access to router, modifies network settings, intercepts traffic, and potentially accesses connected devices.
If Mitigated
With physical security preventing unauthorized access to router hardware, impact is minimal as exploitation requires physical serial connection.
🎯 Exploit Status
Exploitation requires physical access to router and basic serial connection tools. No authentication needed once physical access obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: No vendor advisory found
Restart Required: No
Instructions:
No official patch available. Check vendor website for firmware updates. If update available, download from official source and flash via web interface.
🔧 Temporary Workarounds
Physical Security Hardening
allSecure router in locked cabinet or restricted access area to prevent physical tampering.
Disable Serial Port
allIf firmware allows, disable UART debugging interface through configuration.
🧯 If You Can't Patch
- Decommission vulnerable routers and replace with secure alternatives
- Implement strict physical access controls and monitoring for router locations
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in web admin interface. If version is v21.06.18, device is vulnerable.Check Version:
Check via router web interface at 192.168.1.1 or serial console connectionVerify Fix Applied:
Check if firmware version has been updated beyond v21.06.18. No official fix available to verify.📡 Detection & Monitoring
Log Indicators:
- Serial port access logs (if available)
- Unexpected configuration changes
- Unusual admin login patterns
Network Indicators:
- Unexpected outbound connections from router
- DNS or routing configuration changes
SIEM Query:
Search for router configuration changes outside maintenance windows or serial interface access attempts