Cleartext UDP Traffic Exposure in TeamViewer DEX Client Prior

Publication date: 2026-01-29

Last updated on: 2026-02-11

Assigner: TeamViewer Germany GmbH

Description

A vulnerability in TeamViewer DEX Client (former 1E Client) - Content Distribution Service (NomadBranch.exe) prior version 26.1 for Windows allows an attacker on the adjacent network to cause normally encrypted UDP traffic to be sent in cleartext. This can result in disclosure of sensitive information.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-01-29

Last Modified

2026-02-11

Generated

2026-07-06

AI Q&A

2026-01-29

EPSS Evaluated

2026-07-05

NVD

CVE-2026-23564

EUVD

EUVD-2026-4982

Affected Vendors & Products

Vendor	Product	Version / Range
teamviewer	digital_employee_experience	to 26.1 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-319	The product transmits sensitive or security-critical data in cleartext in a communication channel that can be sniffed by unauthorized actors.

Attack-Flow Graph

Executive Summary

This vulnerability exists in TeamViewer DEX Client's Content Distribution Service (NomadBranch.exe) prior to version 26.1 for Windows. It allows an attacker on the adjacent network to cause UDP traffic, which is normally encrypted, to be sent in cleartext. This means sensitive information that should be protected can be exposed to unauthorized parties.

Impact Analysis

The vulnerability can lead to the disclosure of sensitive information because encrypted UDP traffic is sent in cleartext. An attacker on the adjacent network could intercept this traffic and access confidential data, potentially leading to data breaches or unauthorized information disclosure.

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