Input validation error in Wireshark - CVE-2026-15173
Published: July 9, 2026
Vulnerability identifier: #VU137174
CSH Severity: Medium
CVSS v4.0: 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/E:U/U:Green
CVE-ID: CVE-2026-15173
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Wireshark.org
Affected software:
Wireshark
Wireshark
Detailed vulnerability description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper input validation in the pcapng 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.
User interaction is required to open a crafted packet trace file.
How to mitigate CVE-2026-15173
Install security update from vendor's website.