CVE-2026-23566

Log Injection in Content Distribution Service UDP Handler

CVSS 6.5 MEDIUMEPSS 0.2%CWE-20

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 6.5EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

29 Jan 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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 inject, tamper with, or forge log entries in \Nomad Branch.log via crafted data sent to the UDP network handler. This can impact log integrity and nonrepudiation.

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

Affected products

TeamViewer · DEX

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References

https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1001/