What’s Vulnerable › Vulnerabilities
CVE-2026-23567: Integer underflow in Content Distribution Service UDP handler
- Severity: medium (CVSS 6.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-01-29 · updated 2026-06-17
- Weakness: CWE-122
Description
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
How to fix
Upgrade to a fixed version: TeamViewer Digital Employee Experience 26.1. Check the vendor advisory for mitigations.
References
Get alerted when CVE-2026-23567 or the next vulnerability affects your stack