CVE-2026-23564
Transmission of Unencrypted Data in Content Distribution Service
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.
INFO
Published Date :
Jan. 29, 2026, 9:16 a.m.
Last Modified :
Jan. 29, 2026, 9:16 a.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 13430f76-86eb-43b2-a71c-82c956ef31b6 | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update TeamViewer DEX Client to version 26.1 or later.
- Apply vendor-provided security patches promptly.
- Monitor network traffic for cleartext UDP packets.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-23564.
| URL | Resource |
|---|---|
| https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1001/ |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-23564 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-23564
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-23564 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-23564 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by [email protected]
Jan. 29, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Added CWE CWE-319 Added Reference https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1001/