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CVE-2026-4392

TeamSpeak 3 Server clientek Handshake assertion

Published: May 27, 2026Updated: May 27, 2026 Sources: CVE List NVD
NVD MITRE
5.3CVSS
MEDIUM

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.

EPSS Score
N/A
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:LAvailability
Low

Weaknesses

CWE-617

Affected Products

TeamSpeak 3 Server
n/a

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://vuldb.com/vuln/366316
vuldb.com
https://vuldb.com/vuln/366316/cti
vuldb.com
https://modzero.com/en/advisories/mz-26-01-teamspeak/
modzero.com
and 2 more references View all →

Timeline

Published
May 27, 2026
Last Updated
May 27, 2026

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