CVE-2026-4391

Medium

Description

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.

SeverityMedium

CVSS5.3

Exploit probability37. percentile0.4%

ProductTeamspeak 3 Server

PublishedMay 27, 2026

First seenMay 27, 2026

Weakness typeCWE-122CWE-122 CWE-119Memory buffer bounds error

How to fix

Patches

teamspeak.com/en/downloads/#server

Affected products

Product	Affected versions	Fixed in
teamspeak_3_server teamspeak_3_server	3.13.0, 3.13.1, 3.13.2, 3.13.3, 3.13.4, 3.13.5, 3.13.6, 3.13.7	—

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