CVE-2026-4391CWE-119CWE-122

TeamSpeak 3 Server ECC Key heap-based overflow

Medium · published May 27, 2026

CVSS v4.0
6.9
EPSS
1%
Percentile
52.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
6.9 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X
EPSS
0.00689 · 52.2th percentile
Weaknesses
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer; CWE-122 · Heap-based Buffer Overflow
Published
2026-05-27T16:45Z
EPSS history
Timeline
  • 27 MAY 16:45Z
    TeamSpeak 3 Server ECC Key heap-based overflow
    cvelistv5