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.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact Low

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact Low

User Interaction None

Access Vector Network

Access Complexity Low

Authentication Single

Confidentiality Impact None

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
n/a TeamSpeak 3 Server affected
Version Status Constraints
3.13.0 affected —
3.13.1 affected —
3.13.2 affected —
3.13.3 affected —
3.13.4 affected —
3.13.5 affected —
3.13.6 affected —
3.13.7 affected —
3.13.8 unaffected —

No data.

No data.

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No data.

Project Subscriptions

Vendors Products
Teamspeak 3 Server Subscribe
Teamspeak 3 Server Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://files.teamspeak-services.com/docs/security/TS-SA-2026-001.html cve-icon cve-icon
https://modzero.com/en/advisories/mz-26-01-teamspeak/ cve-icon cve-icon
https://vuldb.com/vuln/366314 cve-icon cve-icon
https://vuldb.com/vuln/366314/cti cve-icon cve-icon
https://www.teamspeak.com/en/downloads/#server cve-icon cve-icon
History

Wed, 27 May 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 27 May 2026 17:45:00 +0000

Type Values Removed Values Added
Description 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.
Title TeamSpeak 3 Server Connection State Management process_resend_queue use after free
First Time appeared Teamspeak 3 Server
Teamspeak 3 Server teamspeak 3 Server
Weaknesses CWE-119
CWE-416
CPEs cpe:2.3:a:teamspeak_3_server:teamspeak_3_server:*:*:*:*:*:*:*:*
Vendors & Products Teamspeak 3 Server
Teamspeak 3 Server teamspeak 3 Server
References
Metrics cvssV2_0

{'score': 5.5, 'vector': 'AV:N/AC:L/Au:S/C:N/I:P/A:P/E:ND/RL:OF/RC:C'}

cvssV3_0

{'score': 5.4, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:X/RL:O/RC:C'}

cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:X/RL:O/RC:C'}

cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2026-05-27T17:58:41.828Z

Reserved: 2026-03-18T15:05:50.926Z

Link: CVE-2026-4390

cve-icon Vulnrichment

Updated: 2026-05-27T17:58:25.831Z

cve-icon NVD

Status : Deferred

Published: 2026-05-27T18:16:28.420

Modified: 2026-05-27T19:49:48.143

Link: CVE-2026-4390

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-27T19:30:35Z

Weaknesses