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CVE-2026-23564

Transmission of Unencrypted Data in Content Distribution Service

Published: Jan 29, 2026Updated: Feb 11, 2026 Sources: CVE List NVD BDUCWE-319
NVD MITRE
6.5CVSSMEDIUM
EPSS Score
0.1%
Top 96.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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 Vector Breakdown

AV:AAC:LPR:NUI:NS:UC:HI:NA:N
Exploitability
AV:AAttack Vector
Adjacent
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-319

Affected Products

1E ClientTeamViewer GmbH
SaaS
Security Products / secure-gateway-vpn
DEXTeamViewer
On-premDesktop App
Communications / messaging-chat
digital employee experienceteamviewer
On-premWeb App
Communications / messaging-chat
teamviewer gmbhcommercialDESecurity Products
teamviewercommercialDECommunicationsaka teamviewer gmbh

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Collection
Credential Access
View detailed technique mapping

References

https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1001/
teamviewer.com

Timeline

Published
Jan 29, 2026
Last Updated
Feb 11, 2026

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