CVE-2026-4391: Heap-based Buffer Overflow in TeamSpeak 3 Server
A heap-based buffer overflow vulnerability exists in the ECC Key Parser component of TeamSpeak 3 Server versions up to 3. 13. 7. This flaw can be exploited remotely without authentication. Upgrading to version 3. 13. 8 resolves the issue.
AI Analysis
Technical Summary
CVE-2026-4391 is a heap-based buffer overflow vulnerability affecting the ECC Key Parser in TeamSpeak 3 Server versions 3.13.0 through 3.13.7. The vulnerability allows remote attackers to cause memory corruption by manipulating the ECC Key Parser, potentially leading to denial of service or other impacts. The issue is fixed in version 3.13.8.
Potential Impact
Successful exploitation could lead to memory corruption on the server, potentially causing a crash or other unintended behavior. The vulnerability is remotely exploitable without authentication, increasing its risk. However, no known exploits are reported in the wild at this time.
Mitigation Recommendations
Upgrade TeamSpeak 3 Server to version 3.13.8 or later to remediate this vulnerability. Patch status is confirmed by the vendor's recommendation to upgrade. No other mitigations are specified.
CVE-2026-4391: Heap-based Buffer Overflow in TeamSpeak 3 Server
Description
A heap-based buffer overflow vulnerability exists in the ECC Key Parser component of TeamSpeak 3 Server versions up to 3. 13. 7. This flaw can be exploited remotely without authentication. Upgrading to version 3. 13. 8 resolves the issue.
CVSS v4.0
Score 6.9medium
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-4391 is a heap-based buffer overflow vulnerability affecting the ECC Key Parser in TeamSpeak 3 Server versions 3.13.0 through 3.13.7. The vulnerability allows remote attackers to cause memory corruption by manipulating the ECC Key Parser, potentially leading to denial of service or other impacts. The issue is fixed in version 3.13.8.
Potential Impact
Successful exploitation could lead to memory corruption on the server, potentially causing a crash or other unintended behavior. The vulnerability is remotely exploitable without authentication, increasing its risk. However, no known exploits are reported in the wild at this time.
Mitigation Recommendations
Upgrade TeamSpeak 3 Server to version 3.13.8 or later to remediate this vulnerability. Patch status is confirmed by the vendor's recommendation to upgrade. No other mitigations are specified.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-03-18T15:05:58.566Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a172e7fe29bf47b50d78abf
Added to database: 5/27/2026, 5:48:47 PM
Last enriched: 5/27/2026, 6:04:37 PM
Last updated: 5/27/2026, 6:51:59 PM
Views: 4
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