Wireshark up to 4.4.14/4.6.4 Kismet Protocol Dissector buffer over-read

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

Summaryinfo

A vulnerability has been found in Wireshark up to 4.4.14/4.6.4 and classified as problematic. The impacted element is an unknown function of the component Kismet Protocol Dissector. Performing a manipulation results in buffer over-read. This vulnerability is cataloged as CVE-2026-6532. It is possible to initiate the attack remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic has been found in Wireshark up to 4.4.14/4.6.4. This affects an unknown part of the component Kismet Protocol Dissector. The manipulation with an unknown input leads to a buffer over-read vulnerability. CWE is classifying the issue as CWE-126. The product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer. This is going to have an impact on availability. The summary by CVE is:

Kismet protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service

The weakness was shared by Sharon Brizinov as 21128. It is possible to read the advisory at wireshark.org. This vulnerability is uniquely identified as CVE-2026-6532 since 04/17/2026. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 326966 (SUSE SLES12: libwireshark9 / libwiretap7 / libwscodecs1 / libwsutil8 / wireshark / etc (SUSE-SU-2026:2969-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.4.15 or 4.6.5 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (326966) and CERT Bund (WID-SEC-2026-1311). Be aware that VulDB is the high quality 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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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Buffer over-read
CWE: CWE-126 / CWE-119
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: 326966
Nessus Name: SUSE SLES12: libwireshark9 / libwiretap7 / libwscodecs1 / libwsutil8 / wireshark / etc (SUSE-SU-2026:2969-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Wireshark 4.4.15/4.6.5

Timelineinfo

04/17/2026 CVE reserved
04/30/2026 +13 days Advisory disclosed
04/30/2026 +0 days VulDB entry created
07/15/2026 +76 days VulDB entry last update

Sourcesinfo

Product: wireshark.org

Advisory: 21128
Researcher: Sharon Brizinov
Status: Confirmed

CVE: CVE-2026-6532 (🔒)
GCVE (CVE): GCVE-0-2026-6532
GCVE (VulDB): GCVE-100-360279
CERT Bund: WID-SEC-2026-1311 - Wireshark: Mehrere Schwachstellen

Entryinfo

Created: 04/30/2026 12:26
Updated: 07/15/2026 18:35
Changes: 04/30/2026 12:26 (65), 05/01/2026 00:38 (7), 07/15/2026 18:35 (2)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

Discussion

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