CVE-2026-4390— TeamSpeak 3 Server Connection State Management process_resend_queue use after free
Possible ATT&CK Techniques 2AI
T1059 · Command and Scripting Interpreter T1203 · Exploitation for Client ExecutionAffected Version Matrix 9
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| n/a | TeamSpeak 3 Server | 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 | ||
| … +1 more rows | |||
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I. Basic Information for CVE-2026-4390
Vulnerability Information
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Vulnerability Title
TeamSpeak 3 Server Connection State Management process_resend_queue use after free
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
释放后使用
Source: NVD (National Vulnerability Database)
Vulnerability Title
TeamSpeak 3 Server 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TeamSpeak 3 Server是美国TeamSpeak公司的一个实时语音通信服务器软件。 TeamSpeak 3 Server 3.13.7及之前版本存在资源管理错误漏洞，该漏洞源于Connection State Management组件中process_resend_queue函数存在释放后重用，可能导致远程攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| - | TeamSpeak 3 Server | 3.13.0 | cpe:2.3:a:teamspeak_3_server:teamspeak_3_server:*:*:*:*:*:*:*:* |
II. Public POCs for CVE-2026-4390
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-4390 (2)
Vendor Pages for CVE-2026-4390 (1)
Same Patch Batch · n/a · 2026-05-27 · 28 CVEs total
| CVE-2026-36044 | 8.8 HIGH | Pensar Apex 安全漏洞 |
| CVE-2026-4391 | 5.3 MEDIUM | TeamSpeak 3 Server ECC Key heap-based overflow |
| CVE-2026-4392 | 5.3 MEDIUM | TeamSpeak 3 Server clientek Handshake assertion |
| CVE-2026-33552 | Northern.tech Mender Enterprise Server 安全漏洞 | |
| CVE-2026-49009 | Northern.tech Mender Server 安全漏洞 | |
| CVE-2025-69600 | RayVentory Scan Engine 安全漏洞 | |
| CVE-2025-67903 | Northern.tech Mender Client 安全漏洞 | |
| CVE-2026-38808 | uzy-ssm-mall 安全漏洞 | |
| CVE-2026-38807 | kvf-admin 安全漏洞 | |
| CVE-2025-70116 | GPAC MP4Box 安全漏洞 | |
| CVE-2025-68712 | Spsoft APPLOCK 安全漏洞 | |
| CVE-2026-38930 | OpenRapid RapidCMS 安全漏洞 | |
| CVE-2026-38931 | SimplePHP 安全漏洞 | |
| CVE-2026-38945 | RayVentory Scan Engine 安全漏洞 | |
| CVE-2025-70103 | libjxl 安全漏洞 | |
| CVE-2026-30498 | AdminPanel 安全漏洞 | |
| CVE-2026-31266 | Craft CMS 安全漏洞 | |
| CVE-2026-37711 | Dolibarr ERP/CRM 安全漏洞 | |
| CVE-2026-37712 | Dolibarr ERP/CRM 安全漏洞 | |
| CVE-2026-37713 | Dolibarr ERP/CRM 安全漏洞 |
Showing top 20 of 28 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
V. Comments for CVE-2026-4390
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