Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-4391— TeamSpeak 3 Server ECC Key heap-based overflow

Quick assessment

Affected
n/a TeamSpeak 3 Server
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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及之前版本存在安全漏洞，该漏洞源于ECC Key Parser组件存在堆缓冲区溢出，可能导致远程攻击。

CVSS 5.3 · Medium EPSS 0.42% · P35

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 9

VendorProduct Version RangeStatus
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
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-4391

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
TeamSpeak 3 Server ECC Key heap-based overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A security vulnerability has been detected in TeamSpeak 3 Server up to 3.13.7. This vulnerability affects unknown code of the component ECC Key Parser. Such manipulation leads to heap-based buffer overflow. The attack may be launched remotely. Upgrading to version 3.13.8 is able to resolve this issue. It is suggested to upgrade the affected component.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
TeamSpeak 3 Server 安全漏洞
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及之前版本存在安全漏洞，该漏洞源于ECC Key Parser组件存在堆缓冲区溢出，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-2026-4391

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-4391

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-4391 (2)

Vendor Pages for CVE-2026-4391 (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-2026-4390 5.4 MEDIUM TeamSpeak 3 Server Connection State Management process_resend_queue use after free
CVE-2026-4392 5.3 MEDIUM TeamSpeak 3 Server clientek Handshake assertion
CVE-2025-70103 libjxl 安全漏洞
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-2026-36540 Netis AC1200 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

Showing top 20 of 28 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: TeamSpeak 3 Server
Same vendor: n/a
Same weakness: CWE-122

V. Comments for CVE-2026-4391

No comments yet

Leave a comment