PT-2026-36049 · Wireshark Foundation · Wireshark

Brendan Coles · Published 2026-04-30 · Updated 2026-04-30 · CVE-2026-5406

Mitre

CVSS v3.1

5.5

Medium

Base vector

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

FC-SWILS protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service

Fix

Uncontrolled Recursion

Weakness Enumeration

CWE-674

Related Identifiers

CVE-2026-5406

Affected Products

Wireshark

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-5406 · Security Note
• https://wireshark.org/security/wnpa-sec-2026-10.html · Note
• https://gitlab.com/wireshark/wireshark/-/issues/21070 · Note