CVE-2025-64987
📋 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 systems managed through the platform. Organizations using vulnerable versions of TeamViewer DEX are affected.
💻 Affected Systems
- TeamViewer DEX (formerly 1E DEX)
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of all connected devices, allowing attackers to install malware, steal data, pivot to other systems, and maintain persistent access across the enterprise network.
Likely Case
Targeted attackers with Actioner credentials could execute commands on specific devices to steal sensitive information, deploy ransomware, or establish footholds for lateral movement.
If Mitigated
With proper access controls, network segmentation, and monitoring, impact is limited to isolated systems with rapid detection and containment.
🎯 Exploit Status
Exploitation requires authenticated access with Actioner privileges. The vulnerability is in the 1E-Explorer-TachyonCore-CheckSimpleIoC instruction.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version specified in TV-2025-1006 advisory
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 patched version. 3. Restart affected services. 4. Verify the update was successful.
🔧 Temporary Workarounds
Restrict Actioner Privileges
allTemporarily reduce the number of users with Actioner privileges to only essential personnel.
Network Segmentation
allIsolate TeamViewer DEX management network from critical systems to limit lateral movement.
🧯 If You Can't Patch
- Implement strict access controls and monitor all Actioner account activity
- Deploy network segmentation to isolate TeamViewer DEX from critical assets
🔍 How to Verify
Check if Vulnerable:
Check TeamViewer DEX version against the patched version in advisory TV-2025-1006Check Version:
Check TeamViewer DEX console or documentation for version informationVerify Fix Applied:
Confirm installation of the patched version and test that command injection attempts are blocked📡 Detection & Monitoring
Log Indicators:
- Unusual command execution patterns from Actioner accounts
- Failed command injection attempts in application logs
Network Indicators:
- Unexpected outbound connections from managed devices following DEX commands
SIEM Query:
Search for '1E-Explorer-TachyonCore-CheckSimpleIoC' with suspicious parameters in TeamViewer DEX logs