Input validation error in Wireshark - #VU142311
Published: August 13, 2026
Vulnerability identifier: #VU142311
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: N/A
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper input validation in the pcapng file parser when parsing input. A local user can trick the victim into opening a malformed packet capture file to cause a denial of service.
User interaction is required to open a crafted packet capture file.
Affected software
Wireshark
Remediation
Install security update from vendor's website.
Wireshark - addressed in versions 4.4.18, 4.6.8