CVE-2026-5402

HIGH

Heap-based Buffer Overflow in Wireshark

Title source: cna

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

CVSS v3 8.8

EPSS 0.0004

EPSS Percentile 11.5%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

CWE

CWE-122

Status published

Products (1)

Wireshark Foundation/Wireshark 4.6.0 - 4.6.5

Published Apr 30, 2026

Tracked Since Apr 30, 2026