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CVE-2026-96420

wireshark: Buffer Over-read in Wireshark

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · September 29, 2026

Updated · October 7, 2026

Description

A flaw was found in Wireshark. An attacker could exploit this vulnerability by enticing a user to open a specially crafted Toshiba capture file, triggering a buffer over-read in the Toshiba file parser. This issue causes the application to crash, leading to a Denial of Service (DoS).

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

CVSS / CWE

CVSS 3.1 · 5.5
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CWE-125 · Out-of-bounds Read