CVE Database›Document archive›CVE-2026-0961

CVE-2026-0961

Wireshark: Wireshark: Denial of Service vulnerability in BLF file parser

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · January 15, 2026

Updated · July 3, 2026

Description

A flaw was found in Wireshark. This vulnerability allows an attacker to trigger a crash in the BLF file parser by providing a specially crafted file. Successful exploitation leads to a denial of service (DoS), making the application unavailable to legitimate users.

Statement

This vulnerability is rated Moderate for Red Hat. An out-of-bounds write flaw in the Wireshark BLF file parser can lead to a denial of service. This issue requires user interaction, as an attacker would need to trick a user into opening a specially crafted BLF file.

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

To mitigate this issue, users should avoid opening or processing untrusted BLF (Binary Logging Format) files with Wireshark. Exercise caution when handling BLF files from unknown or unverified sources to prevent potential denial of service attacks.

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-787 · Out-of-bounds Write