CVE-2026-5402 | Wireshark up to 4.6.4 TLS Protocol Dissector heap-based overflow (ID 21090 / EUVD-2026-26318)

April 30, 2026 Yanac

A vulnerability classified as critical has been found in Wireshark up to 4.6.4. This affects an unknown function of the component TLS Protocol Dissector. This manipulation causes heap-based buffer overflow.

This vulnerability is tracked as CVE-2026-5402. The attack is possible to be carried out remotely. No exploit exists.

It is recommended to upgrade the affected component.VulDB Recent EntriesRead More