CVE-2026-4392: Reachable Assertion in TeamSpeak 3 Server
CVE-2026-4392 is a medium severity vulnerability in TeamSpeak 3 Server versions up to 3. 13. 7. It involves a reachable assertion triggered by manipulating the 'proof' argument in the clientek Handshake Handler component. This vulnerability can be exploited remotely without authentication. Upgrading to TeamSpeak 3 Server version 3. 13. 8 addresses this issue.
AI Analysis
Technical Summary
This vulnerability affects TeamSpeak 3 Server versions 3.13.0 through 3.13.7. The issue arises from improper handling of the 'proof' argument in the clientek Handshake Handler, leading to a reachable assertion condition. The vulnerability is remotely exploitable without requiring privileges or user interaction. The CVSS 4.0 base score is 6.9, indicating medium severity. The vendor has released version 3.13.8 which mitigates this vulnerability.
Potential Impact
Successful exploitation of this vulnerability can cause the server to hit an assertion failure, potentially leading to denial of service or unexpected behavior. No evidence of privilege escalation or data compromise is indicated. Remote attackers can exploit this without authentication or user interaction.
Mitigation Recommendations
Upgrade TeamSpeak 3 Server to version 3.13.8 or later, which addresses this vulnerability. No other official remediation or temporary fixes are documented. Patch status is confirmed by the advisory recommending upgrading to 3.13.8.
CVE-2026-4392: Reachable Assertion in TeamSpeak 3 Server
Description
CVE-2026-4392 is a medium severity vulnerability in TeamSpeak 3 Server versions up to 3. 13. 7. It involves a reachable assertion triggered by manipulating the 'proof' argument in the clientek Handshake Handler component. This vulnerability can be exploited remotely without authentication. Upgrading to TeamSpeak 3 Server version 3. 13. 8 addresses this issue.
CVSS v4.0
Score 6.9medium
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects TeamSpeak 3 Server versions 3.13.0 through 3.13.7. The issue arises from improper handling of the 'proof' argument in the clientek Handshake Handler, leading to a reachable assertion condition. The vulnerability is remotely exploitable without requiring privileges or user interaction. The CVSS 4.0 base score is 6.9, indicating medium severity. The vendor has released version 3.13.8 which mitigates this vulnerability.
Potential Impact
Successful exploitation of this vulnerability can cause the server to hit an assertion failure, potentially leading to denial of service or unexpected behavior. No evidence of privilege escalation or data compromise is indicated. Remote attackers can exploit this without authentication or user interaction.
Mitigation Recommendations
Upgrade TeamSpeak 3 Server to version 3.13.8 or later, which addresses this vulnerability. No other official remediation or temporary fixes are documented. Patch status is confirmed by the advisory recommending upgrading to 3.13.8.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-03-18T15:06:05.814Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a172e7fe29bf47b50d78ac6
Added to database: 5/27/2026, 5:48:47 PM
Last enriched: 5/27/2026, 6:04:30 PM
Last updated: 5/27/2026, 6:52:22 PM
Views: 5
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