Wireshark up to 4.4.14/4.6.4 K12 RF5 File Parser buffer overflow

CVSS Meta Temp Score
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CTI Interest Score
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3.8$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Wireshark up to 4.4.14/4.6.4. The affected element is an unknown function of the component K12 RF5 File Parser. Such manipulation leads to buffer overflow. This vulnerability is referenced as CVE-2026-5404. It is possible to launch the attack remotely. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Wireshark up to 4.4.14/4.6.4 and classified as problematic. Affected by this issue is an unknown functionality of the component K12 RF5 File Parser. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is availability. CVE summarizes:

K12 RF5 file parser crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service

The advisory is available at wireshark.org. This vulnerability is handled as CVE-2026-5404 since 04/02/2026. 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. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 313009 (Debian dsa-6249 : libwireshark-data - security update), 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 (313009) and CERT Bund (WID-SEC-2026-1311). If you want to get best quality of vulnerability data, you may have to visit VulDB.

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: 3.9
VulDB Meta Temp Score: 3.8

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

CNA Base Score: 4.7
CNA Vector (GitLab): 🔒

CVSSv2info

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

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / 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: 313009
Nessus Name: Debian dsa-6249 : libwireshark-data - security update

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Wireshark 4.4.15/4.6.5

Timelineinfo

04/02/2026 CVE reserved
05/01/2026 +29 days Advisory disclosed
05/01/2026 +0 days VulDB entry created
05/07/2026 +6 days VulDB entry last update

Sourcesinfo

Product: wireshark.org

Advisory: 21094
Status: Confirmed

CVE: CVE-2026-5404 (🔒)
GCVE (CVE): GCVE-0-2026-5404
GCVE (VulDB): GCVE-100-360410
CERT Bund: WID-SEC-2026-1311 - Wireshark: Mehrere Schwachstellen

Entryinfo

Created: 05/01/2026 07:43
Updated: 05/07/2026 23:06
Changes: 05/01/2026 07:43 (65), 05/01/2026 13:09 (7), 05/07/2026 23:06 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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