Wireshark up to 4.6.4 IEEE 802.11 Protocol Dissector null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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4.2$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Wireshark up to 4.6.4. This affects an unknown function of the component IEEE 802.11 Protocol Dissector. The manipulation results in null pointer dereference. This vulnerability is reported as CVE-2026-6525. The attack can be launched remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Wireshark up to 4.6.4. It has been classified as problematic. Affected is some unknown functionality of the component IEEE 802.11 Protocol Dissector. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability. CVE summarizes:

IEEE 802.11 protocol dissector crash in Wireshark 4.6.0 to 4.6.4

The weakness was disclosed by Nils Bagge. The advisory is shared for download at wireshark.org. This vulnerability is traded as CVE-2026-6525 since 04/17/2026. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 311801 (Linux Distros Unpatched Vulnerability : CVE-2026-6525), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.6.5 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (311801), EUVD (EUVD-2026-26785) and CERT Bund (WID-SEC-2026-1311). Once again VulDB remains the best source for vulnerability data.

Affected

  • Open Source Wireshark

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.2

VulDB Base Score: 3.1
VulDB Temp Score: 3.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.5
CNA Vector (GitLab): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 311801
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-6525

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Wireshark 4.6.5

Timelineinfo

04/17/2026 CVE reserved
05/02/2026 +15 days Advisory disclosed
05/02/2026 +0 days VulDB entry created
05/03/2026 +1 days VulDB entry last update

Sourcesinfo

Product: wireshark.org

Advisory: wireshark.org
Researcher: Nils Bagge
Status: Confirmed

CVE: CVE-2026-6525 (🔒)
GCVE (CVE): GCVE-0-2026-6525
GCVE (VulDB): GCVE-100-360852
EUVD: 🔒
CERT Bund: WID-SEC-2026-1311 - Wireshark: Mehrere Schwachstellen

Entryinfo

Created: 05/02/2026 15:56
Updated: 05/03/2026 17:41
Changes: 05/02/2026 15:56 (65), 05/02/2026 16:05 (7), 05/03/2026 00:26 (1), 05/03/2026 17:41 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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