CVE-2026-5407

MEDIUM

Loop with Unreachable Exit Condition ('Infinite Loop') in Wireshark

Title source: cna

SMB2 protocol dissector infinite loop in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service

Core 3

Core References

Issue Tracking, Third Party Advisory

Issue Tracking, Permissions Required issue-tracking permissions-required

GitLab Issue #21073

CVSS v3 5.5

EPSS 0.0014

EPSS Percentile 3.5%

Attack Vector LOCAL

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

Vulnrichment

Exploitation poc

Automatable no

Technical Impact partial

CWE

CWE-835

Status published

Products (3)

wireshark/wireshark 4.4.0 - 4.4.14

Wireshark Foundation/Wireshark 4.4.0 - 4.4.15

Wireshark Foundation/Wireshark 4.6.0 - 4.6.5

Published Apr 30, 2026

Tracked Since Apr 30, 2026