Wireshark up to 4.4.15/4.6.5 ROHC Protocol Dissector null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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4.5$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Wireshark up to 4.4.15/4.6.5. The impacted element is an unknown function of the component ROHC Protocol Dissector. The manipulation results in null pointer dereference. This vulnerability is identified as CVE-2026-9759. The attack can be executed remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic has been found in Wireshark up to 4.4.15/4.6.5. Affected is an unknown part of the component ROHC 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:

ROHC protocol dissector crash in Wireshark 4.6.0 to 4.6.5 and 4.4.0 to 4.4.15 allows denial of service

The weakness was released by Arjun Basnet. The advisory is shared for download at wireshark.org. This vulnerability is traded as CVE-2026-9759 since 05/27/2026. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 317943 (Linux Distros Unpatched Vulnerability : CVE-2026-9759), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.4.16 or 4.6.6 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (317943) and EUVD (EUVD-2026-32629). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.6
VulDB Meta Temp Score: 4.5

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

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

CVSSv2info

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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: 317943
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-9759

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Wireshark 4.4.16/4.6.6

Timelineinfo

05/27/2026 Advisory disclosed
05/27/2026 +0 days CVE reserved
05/27/2026 +0 days VulDB entry created
06/01/2026 +5 days VulDB entry last update

Sourcesinfo

Product: wireshark.org

Advisory: wireshark.org
Researcher: Arjun Basnet
Status: Confirmed

CVE: CVE-2026-9759 (🔒)
GCVE (CVE): GCVE-0-2026-9759
GCVE (VulDB): GCVE-100-366516
EUVD: 🔒

Entryinfo

Created: 05/27/2026 22:01
Updated: 06/01/2026 14:58
Changes: 05/27/2026 22:01 (65), 05/28/2026 00:36 (1), 06/01/2026 14:58 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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