CVE-2026-6525

wireshark: NULL Pointer Dereference in Wireshark

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · May 2, 2026

Updated · July 15, 2026

Description

A flaw was found in the IEEE 802.11 dissector in Wireshark. This issue occurs when malformed packets are decoded from a pcap file or the network, causing a NULL pointer dereference, resulting in a denial of service.

Statement

This issue will cause a crash in Wireshark with no other security impact. Also, this flaw can only be exploited when a malformed pcap file is processed. Due to these reasons, this vulnerability has been rated with a moderate severity.

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

No mitigation is specified in collected source.

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-476 · NULL Pointer Dereference