Command Injection Vulnerability in TeamViewer DEX Affects User Devices
CVE-2025-64986

7.2HIGH

Key Information:

Vendor

Teamviewer

Status
Dex
Vendor
CVE Published:
11 December 2025

What is CVE-2025-64986?

A command injection vulnerability was identified in TeamViewer DEX, enabling authenticated attackers with Actioner privileges to execute arbitrary commands. This flaw arises from improper input validation in the 1E-Explorer-TachyonCore-DevicesListeningOnAPort instruction prior to version 21. Attackers can exploit this weakness to remotely execute elevated commands on devices connected to the TeamViewer platform, posing a significant security risk to user environments.

Affected Version(s)

DEX 0 < 21

References

https://www.teamviewer.com/en/resources/trust-center/secu...

CVSS V3.1

Score:
7.2
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Lockheed Martin Red Team
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