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CVE-2026-4390

TeamSpeak 3 Server Connection State Management process_resend_queue use after free

Published: May 27, 2026Updated: May 27, 2026 Sources: CVE List NVD
NVD MITRE
5.4CVSS
MEDIUM

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.

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

CVSS Vector Breakdown

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

Weaknesses

CWE-119CWE-416

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

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://vuldb.com/vuln/366314
vuldb.com
https://vuldb.com/vuln/366314/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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