CVE-2025-64993
📋 TL;DR
A command injection vulnerability in TeamViewer DEX (formerly 1E DEX) allows authenticated attackers with Actioner privileges to execute arbitrary commands on connected devices. This enables remote code execution with elevated privileges on managed endpoints. Organizations using affected TeamViewer DEX versions are at risk.
💻 Affected Systems
- TeamViewer DEX (formerly 1E DEX)
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of all connected devices, lateral movement across the network, data exfiltration, ransomware deployment, and persistent backdoor installation.
Likely Case
Targeted attackers with Actioner credentials gain control over specific devices for data theft, surveillance, or establishing footholds for further attacks.
If Mitigated
Limited impact due to restricted Actioner privileges, network segmentation, and proper input validation preventing successful exploitation.
🎯 Exploit Status
Exploitation requires authenticated access with Actioner privileges; command injection typically has low complexity once credentials are obtained
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in advisory; update to latest TeamViewer DEX version
Vendor Advisory: https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2025-1006/
Restart Required: Yes
Instructions:
1. Review TeamViewer advisory TV-2025-1006. 2. Update TeamViewer DEX to the latest version. 3. Restart affected services. 4. Verify the update was successful.
🔧 Temporary Workarounds
Restrict Actioner Privileges
allTemporarily reduce or remove Actioner privileges from non-essential accounts
# Review and modify user roles in TeamViewer DEX console
Network Segmentation
allIsolate TeamViewer DEX management network from critical systems
# Configure firewall rules to restrict DEX traffic
🧯 If You Can't Patch
- Implement strict least-privilege access controls for Actioner roles
- Deploy network monitoring and EDR solutions to detect command injection attempts
🔍 How to Verify
Check if Vulnerable:
Check TeamViewer DEX version against the patched version in advisory TV-2025-1006Check Version:
# Check TeamViewer DEX version via management console or agent queryVerify Fix Applied:
Confirm installation of the latest TeamViewer DEX version and test that command injection attempts are blocked📡 Detection & Monitoring
Log Indicators:
- Unusual command execution patterns in DEX logs
- Multiple failed authentication attempts followed by successful Actioner login
- Suspicious process creation from DEX components
Network Indicators:
- Anomalous outbound connections from DEX-managed devices
- Unexpected network traffic between DEX components
SIEM Query:
source="teamviewer_dex" AND (event_type="command_execution" AND command="*;*" OR command="*|*" OR command="*`*" OR command="*$(*)")