CVE-2026-23567 MEDIUM

CVE-2026-23567: Integer underflow in Content Distribution Service UDP handler

Vendor Teamviewer
Product DEX
Weakness CWE-122
Published January 29, 2026
Last update January 29, 2026
View on NVD All CVEs

CVSS base score

6.5/10
Attack vector Adjacent
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

What the vulnerability does

01Description

An integer underflow in the UDP command handler of the TeamViewer DEX Client (former 1E Client) - Content Distribution Service (NomadBranch.exe) prior version 26.1 for Windows allows an adjacent network attacker to trigger a heap-based buffer overflow and cause a denial-of-service (service crash) via specially crafted UDP packets.

Key dates

02Disclosure timeline

January 29, 2026 CVE published
January 29, 2026 Record updated