Buffer overflow in Teamspeak 3 Server
CVE-2026-4391
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 remot…
Vulnerability class: Buffer Overflow
EPSS: 0.001 (17.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
Affected products
- N/a Teamspeak 3 Server — versions 3.13.0, 3.13.1, 3.13.2
Weakness classification (CWE)
References
- cna@vuldb.com (vdb-entry)
- cna@vuldb.com (signature, permissions-required)
- cna@vuldb.com (related)
- cna@vuldb.com (related)
- cna@vuldb.com (patch)
Frequently asked questions
- What is CVE-2026-4391?
- CVE-2026-4391 is a medium-severity vulnerability in Teamspeak 3 Server, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.3/10. Published 2026-05-27.
- How severe is CVE-2026-4391?
- Medium severity. CVSS v3 base score is 5.3 out of 10.