CVE-2026-23567
Integer Underflow in TeamViewer NomadBranch UDP Causes DoS
Publication date: 2026-01-29
Last updated on: 2026-02-11
Assigner: TeamViewer Germany GmbH
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| teamviewer | digital_employee_experience | to 26.1 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-122 | A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is an integer underflow in the UDP command handler of the TeamViewer DEX Client's Content Distribution Service (NomadBranch.exe) prior to version 26.1 on Windows. It allows an adjacent network attacker to send specially crafted UDP packets that trigger a heap-based buffer overflow, which can cause the service to crash (denial-of-service).
How can this vulnerability impact me? :
The vulnerability can cause a denial-of-service condition by crashing the affected service, potentially disrupting normal operations of the TeamViewer DEX Client on Windows systems.