Input validation error in Wireshark - CVE-2026-96420

Vulnerability identifier: #VU151889

CSH Severity: Medium

CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-96420

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper input validation in the Toshiba file parser when parsing a malformed packet trace file. A remote attacker can trick the victim into opening a crafted packet trace file to cause a denial of service.

Wireshark
openEuler
wireshark
wireshark-help
wireshark-devel
wireshark-debugsource
wireshark-debuginfo

Install security update from vendor's website.

Wireshark - addressed in versions 4.4.19, 4.6.9
wireshark - update to 4.4.19-1
wireshark-help - update to 4.4.19-1
wireshark-devel - update to 4.4.19-1
wireshark-debugsource - update to 4.4.19-1
wireshark-debuginfo - update to 4.4.19-1

• https://www.wireshark.org/security/wnpa-sec-2026-105.html
• https://gitlab.com/wireshark/wireshark/-/commit/9f54bc5a6b

• Multiple vulnerabilities in Wireshark
• openEuler 24.03 LTS SP4 update for wireshark
• openEuler 24.03 LTS SP3 update for wireshark
• openEuler 24.03 LTS SP1 update for wireshark
• openEuler 22.03 LTS SP4 update for wireshark