CVE-2026-4390

TeamSpeak 3 Server Connection State Management process_resend_queue use after free

MEDIUM
5.4
CVSS Score
Published: May 27, 2026 at 04:30 PM UTC
Updated: June 17, 2026 at 10:56 AM UTC
1 product affected across 1 vendorTeamSpeak 3 Server

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Severity
MEDIUM5.4
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Vendor states this is fixed in 3.13.8 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (5)

VDB EntryTechnical Description
Source: cverecord
https://vuldb.com/vuln/366314
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/366314/cti

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.4MEDIUMVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-416CWE-119

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