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CVE

CWE

Training

CVE-2026-4390

Published: May 27, 2026

Modified: May 27, 2026

PUBLISHED

CVSS v3.1

5.4

MEDIUM

Description

A weakness has been identified in TeamSpeak 3 Server up to 3.13.7. This affects the function process_resend_queue of the component Connection State Management. This manipulation causes use after free. The attack may be initiated remotely. Upgrading to version 3.13.8 is able to mitigate this issue. The affected component should be upgraded.

Vendor	Product	Versions
n/a	TeamSpeak 3 Server	affected `3.13.0` affected `3.13.1` affected `3.13.2` affected `3.13.3` affected `3.13.4` +4 more versions

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:X/RL:O/RC:C

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

Low

References

VDB-366314 | TeamSpeak 3 Server Connection State Management process_resend_queue use after free

vdb-entry

technical-description

VDB-366314 | CTI Indicators (IOB, IOC, IOA)

signature

permissions-required

https://modzero.com/en/advisories/mz-26-01-teamspeak/

related

https://files.teamspeak-services.com/docs/security/TS-SA-2026-001.html

related

https://www.teamspeak.com/en/downloads/#server

patch

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