CVE-2026-23567: TeamViewer Digital Employee Experience

Medium severity, CVSS 6.5. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• TeamViewer Digital Employee Experience: before 26.1 (fixed in 26.1)

Published 2026-01-29. Last modified 2026-06-17.