CVE-2026-4392CWE-617

TeamSpeak 3 Server clientek Handshake assertion

Medium · published May 27, 2026

CVSS v4.0
6.9
EPSS
1%
Percentile
49.9
In the wild
Unconfirmed
What it is

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.

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
0.00637 · 49.9th percentile
Weakness
CWE-617 · Reachable Assertion
Published
2026-05-27T17:00Z
EPSS history
Timeline
  • 27 MAY 17:00Z
    TeamSpeak 3 Server clientek Handshake assertion
    cvelistv5