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Vulnerability IntelligenceCVE-2026-4392

CVE-2026-4392

MEDIUM6.9

TeamSpeak 3 Server clientek Handshake assertion

Published May 27, 2026

Modified 3 weeks ago

Details

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.

References

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

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

https://vuldb.com/vuln/366316

https://vuldb.com/vuln/366316/cti

https://www.cve.org/CVERecord?id=CVE-2026-4392

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

CVSS Analysis

CVSS v4.0

6.9

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Attack Requirements

NoneAT:N

Privileges Required

NonePR:N

User Interaction

NoneUI:N

Vulnerable System

Vuln. Confidentiality

NoneVC:N

Vuln. Integrity

NoneVI:N

Vuln. Availability

LowVA:L

Subsequent System

Subseq. Confidentiality

NoneSC:N

Subseq. Integrity

NoneSI:N

Subseq. Availability

NoneSA:N

6.9/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

Weakness Type (CWE)

Other

Ecosystems

Timeline

PublishedMay 27, 2026

ModifiedMay 28, 2026

CVE-2026-4392 | Mondoo Vulnerability Intelligence