CVE-2026-4392

TeamSpeak 3 Server clientek Handshake assertion

MEDIUM
5.3
CVSS Score
Published: May 27, 2026 at 05:00 PM UTC
Updated: June 17, 2026 at 10:56 AM UTC
1 product affected across 1 vendorTeamSpeak 3 Server

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

A vulnerability was detected in TeamSpeak 3 Server up to 3.13.7. This issue affects some unknown processing of the component clientek Handshake Handler. Performing a manipulation of the argument proof results in reachable assertion. Remote exploitation of the attack is possible. Upgrading to version 3.13.8 is capable of addressing this issue. Upgrading the affected component is recommended.

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/366316
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/366316/cti

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

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

CVSS

5.3MEDIUMVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-617

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