Wireshark up to 4.6.4 RTSP 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 labeled as problematic has been found in Wireshark up to 4.6.4. Affected by this vulnerability is an unknown functionality of the component RTSP Protocol Dissector. Such manipulation leads to null pointer dereference. This vulnerability is uniquely identified as CVE-2026-6526. The attack can be launched remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Wireshark up to 4.6.4. Affected by this issue is an unknown part of the component RTSP Protocol Dissector. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to 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. Impacted is availability.

The weakness was disclosed by Alexandre De Oliveira. The advisory is shared for download at wireshark.org. This vulnerability is handled as CVE-2026-6526 since 04/17/2026. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. 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 318251 (SUSE SLES15 Security Update : wireshark (SUSE-SU-2026:2203-1)), 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 (318251) and CERT Bund (WID-SEC-2026-1311). VulDB is the best source for vulnerability data and more expert information about this specific topic.

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: 318251
Nessus Name: SUSE SLES15 Security Update : wireshark (SUSE-SU-2026:2203-1)

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
04/30/2026 +13 days Advisory disclosed
04/30/2026 +0 days VulDB entry created
06/03/2026 +34 days VulDB entry last update

Sourcesinfo

Product: wireshark.org

Advisory: wireshark.org
Researcher: Alexandre De Oliveira
Status: Confirmed

CVE: CVE-2026-6526 (🔒)
GCVE (CVE): GCVE-0-2026-6526
GCVE (VulDB): GCVE-100-360272
CERT Bund: WID-SEC-2026-1311 - Wireshark: Mehrere Schwachstellen

Entryinfo

Created: 04/30/2026 12:23
Updated: 06/03/2026 10:49
Changes: 04/30/2026 12:23 (64), 04/30/2026 21:48 (7), 06/03/2026 10:49 (2)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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