TeamSpeak 3 Server clientek Handshake assertion
Priority LOW 37CWE-617Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-617.
Summary
A vulnerability was detected in TeamSpeak 3 Server up to 3.13.7. This issue affects some unknown processing of the component clientek Handshake Handler. Performing a manipulation of the argument proof results in reachable assertion. Remote exploitation of the attack is possible. Upgrading to version 3.13.8 is capable of addressing this issue. Upgrading the affected component is recommended.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00402 34th percentileScored 2026-11-07
Fix Fixed TeamSpeak 3 Server: 3.13.8
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- 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-2026-4392
- 2026-10-03 Alias added: GHSA-jfq9-pq7p-655w
References
Sources
- CVE-2026-4392 · CVE Program
- CVE-2026-4392 · NVD
- FIRST EPSS
- GHSA-jfq9-pq7p-655w · GitHub Advisory Database · CC BY 4.0
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