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TeamSpeak 3 Server EUVD-2026-32592

| CVE-2026-4392 MEDIUM
Reachable Assertion (CWE-617)
2026-05-27 cna@vuldb.com GHSA-jfq9-pq7p-655w
Denial Of Service
6.9
CVSS 4.0
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CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

1
Analysis Generated
May 27, 2026 - 21:04 vuln.today

DescriptionNVD

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.

AnalysisAI

Reachable assertion in TeamSpeak 3 Server's client handshake handler allows remote unauthenticated attackers to crash the server by manipulating the 'proof' argument during connection setup, resulting in a denial of service. All versions from 3.13.0 through 3.13.7 are affected; the issue was independently researched by modzero and disclosed via TeamSpeak security advisory TS-SA-2026-001. …

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EUVD-2026-32592 vulnerability details – vuln.today
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