TeamSpeak 3 Server ECC Key heap-based overflow
Priority HIGH 70CWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0042 36th percentileScored 2026-11-07
Fix Fixed TeamSpeak 3 Server: 3.13.8
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | TeamSpeak 3 Server | 3.13.0; 3.13.1; 3.13.2; 3.13.3; 3.13.4; 3.13.5; 3.13.6; 3.13.7 | 3.13.8 | Patch available | CNA |
- TeamSpeak 3 Server Vendor— Affected 3.13.0; 3.13.1; 3.13.2; 3.13.3; 3.13.4; 3.13.5; 3.13.6; 3.13.7 Fixed in 3.13.8 Patch available CNA
CPE names CNA · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:teamspeak_3_server:teamspeak_3_server:*:*:*:*:*:*:*:* | — | — | — |
- cpe:2.3:a:teamspeak_3_server:teamspeak_3_server:*:*:*:*:*:*:*:* Versions — — ·—
Remediation
- Fix · CNA TeamSpeak 3 Server Fixed in 3.13.8
Timeline
- 2026-10-02 Threatist record created from CVE-2026-4391
- 2026-10-03 Alias added: GHSA-h574-9fvh-93j7
- 2026-10-25 EPSS moved to the below the 50th percentile
References
Sources
- CVE-2026-4391 · CVE Program
- CVE-2026-4391 · NVD
- FIRST EPSS
- GHSA-h574-9fvh-93j7 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences