Command Injection Vulnerability in TeamViewer DEX by TeamViewer
CVE-2025-64990

6.8MEDIUM

Key Information:

Vendor

Teamviewer

Status
Dex
Vendor
CVE Published:
11 December 2025

What is CVE-2025-64990?

A command injection vulnerability has been identified in TeamViewer DEX, specifically in the 1E-Explorer-TachyonCore-LogoffUser instruction for versions prior to V21.1. This flaw results from improper input validation, which allows authenticated users with Actioner privileges to execute arbitrary commands. Successful exploitation of this vulnerability can lead to the remote execution of elevated commands on devices that are connected to the platform, potentially compromising system integrity.

Affected Version(s)

DEX 0 < 21.1

References

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

CVSS V3.1

Score:
6.8
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Lockheed Martin Red Team
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