CVE-2026-4390: medium-severity vulnerability in TeamSpeak 3 Server
TeamSpeak 3 Server Connection State Management process_resend_queue use after free
Published
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33Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 5.3epss 0.3%
from disclosure to weaponsame day
Published on NVDMay 27
1st PoCMay 9
A weakness has been identified in TeamSpeak 3 Server up to 3.13.7. This affects the function process_resend_queue of the component Connection State Management. This manipulation causes use after free. The attack may be initiated remotely. Upgrading to version 3.13.8 is able to mitigate this issue. The affected component should be upgraded.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X
Affected products
n/a · TeamSpeak 3 Serverpublic PoCs found — 1
githubgithub.com/born0monday/teamspeak3-vulnerabilities★ 0⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.