CVE-2026-23564 Transmission of Unencrypted Data in Content Distribution Service
An attacker on the adjacent network can cause sensitive data to be transmitted in cleartext instead of encrypted, leading to information disclosure.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-23564?
CVE-2026-23564 is a medium-severity vulnerability in TeamViewer DEX, published on 29 Jan 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-319
Which versions are affected by CVE-2026-23564?
It affects 1 product.
Products include Teamviewer Digital Employee Experience.
How do I fix CVE-2026-23564?
No fix has been published for CVE-2026-23564 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-23564 being exploited?
There is no known exploitation of CVE-2026-23564 in the wild and no public exploit code.
Other vulnerabilities in TeamViewer DEX
- CVE-2025-44016 File Hash Validation Bypass in NomadBranch.exe
- CVE-2025-64986 Command Injection in 1E-Explorer-TachyonCore-DevicesListeningOnAPort Instruction
- CVE-2025-64987 Command Injection in 1E-Explorer-TachyonCore-CheckSimpleIoC Instruction
- CVE-2025-64988 Command Injection in 1E-Nomad-GetCmContentLocations Instruction
- CVE-2025-64989 Command Injection in 1E-Explorer-TachyonCore-FindFileBySizeAndHash Instruction
Sources
Also known as GHSA-84pp-fp9r-5535.