PT-2026-36048 · Wireshark Foundation · Wireshark

Published 2026-04-30 · Updated 2026-04-30 · CVE-2026-5402

Mitre

CVSS v3.1

8.8

High

Base vector

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

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

Fix

Heap Based Buffer Overflow

Weakness Enumeration

CWE-122

Related Identifiers

CVE-2026-5402

Affected Products

Wireshark

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-5402 · Security Note
• https://wireshark.org/security/wnpa-sec-2026-14.html · Note
• https://gitlab.com/wireshark/wireshark/-/issues/21090 · Note