CVE-2026-5402: Wireshark

High severity, CVSS 8.8. EPSS: 0.7% chance of exploitation in the next 30 days.

TLS protocol dissector heap overflow in Wireshark 4.6.0 to 4.6.4 allows denial of service and possible code execution

Affected products

• Wireshark Wireshark: from 4.6.0, up to and including 4.6.4

Published 2026-04-30. Last modified 2026-07-15.