All vulnerabilities
CVE-2026-96421

Improperly Controlled Sequential Memory Allocation in Wireshark

Wireshark Foundation Wireshark
Open in ThreatlineRecord JSON
CVSS
5.5Medium
ExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 29 Sep 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.13%Chance of exploitation activity in the next 30 days, higher than 2% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in4.6.9Also 4.4.19CVE List
Published29 Sep 2026Updated 29 Sep 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

USB HID protocol dissector infinite loop and memory leak in 4.6.0 to 4.6.8 and 4.4.0 to 4.4.18 allows denial of service

Text from CVE List

Affected versions 2

  • Wiresharkaffected: 4.6.0 before 4.6.9CVE List
  • Wiresharkaffected: 4.4.0 before 4.4.19CVE List

References 2