CVE-2020-11950
📋 TL;DR
This vulnerability allows authenticated users to upload and execute scripts on affected VIVOTEK network cameras, leading to remote code execution with OS command injection. It affects VIVOTEK network cameras running firmware versions before XXXXX-VVTK-2.2002.xx.01x and before XXXXX-VVTK-0XXXX_Beta2, including IT9388-HT devices.
💻 Affected Systems
- VIVOTEK Network Cameras
- IT9388-HT devices
📦 What is this software?
Ip9165 Lpc\(i Cs Kit\) Firmware by Vivotek
⚠️ Risk & Real-World Impact
Worst Case
Full device compromise allowing attacker to execute arbitrary commands, install persistent backdoors, pivot to internal networks, and disable camera functionality.
Likely Case
Unauthorized access to camera feeds, device configuration changes, and potential use as foothold for lateral movement within the network.
If Mitigated
Limited impact if proper network segmentation and access controls prevent authenticated attackers from reaching vulnerable interfaces.
🎯 Exploit Status
Exploitation requires authenticated access but is straightforward once credentials are obtained. The vulnerability is in script upload functionality.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: XXXXX-VVTK-2.2002.xx.01x or later, XXXXX-VVTK-0XXXX_Beta2 or later
Vendor Advisory: http://download.vivotek.com/downloadfile/support/cyber-security/vvtk-sa-2020-001-v1.pdf
Restart Required: Yes
Instructions:
1. Download latest firmware from VIVOTEK support portal. 2. Log into camera web interface. 3. Navigate to Maintenance > Firmware Upgrade. 4. Upload firmware file. 5. Wait for automatic reboot.
🔧 Temporary Workarounds
Network Segmentation
allIsolate cameras on separate VLAN with restricted access to management interfaces
Access Control
allImplement strong authentication, change default credentials, and restrict admin access to trusted IPs
🧯 If You Can't Patch
- Segment cameras on isolated network with no internet access
- Implement strict firewall rules to block all inbound traffic except from authorized management stations
🔍 How to Verify
Check if Vulnerable:
Check firmware version in camera web interface under Maintenance > System InformationCheck Version:
No CLI command available - check via web interface or SNMP if configuredVerify Fix Applied:
Confirm firmware version is XXXXX-VVTK-2.2002.xx.01x or later, or XXXXX-VVTK-0XXXX_Beta2 or later📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads to camera web interface
- Multiple failed login attempts followed by successful login
- Unexpected process execution or system commands
Network Indicators:
- HTTP POST requests to script upload endpoints from unusual sources
- Outbound connections from cameras to unexpected destinations
SIEM Query:
source="camera_logs" AND (event="file_upload" OR event="script_execution")