CVE-2026-4391

Medium severity, CVSS 5.3. EPSS: 0.7% chance of exploitation in the next 30 days.

A security vulnerability has been detected in TeamSpeak 3 Server up to 3.13.7. This vulnerability affects unknown code of the component ECC Key Parser. Such manipulation leads to heap-based buffer overflow. The attack may be launched remotely. Upgrading to version 3.13.8 is able to resolve this issue. It is suggested to upgrade the affected component.

Published 2026-05-27. Last modified 2026-06-17.