Wireshark up to 4.4.13/4.6.3 RF4CE Profile Protocol Dissector buffer over-read

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

Summaryinfo

A vulnerability, which was classified as problematic, was found in Wireshark up to 4.4.13/4.6.3. Affected by this vulnerability is an unknown functionality of the component RF4CE Profile Protocol Dissector. Executing a manipulation can lead to buffer over-read. This vulnerability is handled as CVE-2026-3203. The attack can be executed remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Wireshark up to 4.4.13/4.6.3. It has been declared as problematic. This vulnerability affects some unknown functionality of the component RF4CE Profile Protocol Dissector. The manipulation with an unknown input leads to a buffer over-read vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability. CVE summarizes:

RF4CE Profile protocol dissector crash in Wireshark 4.6.0 to 4.6.3 and 4.4.0 to 4.4.13 allows denial of service

The advisory is shared for download at wireshark.org. This vulnerability was named CVE-2026-3203 since 02/25/2026. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 300138 (Linux Distros Unpatched Vulnerability : CVE-2026-3203), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.4.14 or 4.6.4 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (300138), EUVD (EUVD-2026-8662) and CERT Bund (WID-SEC-2026-0536). 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: 4.6
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

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 300138
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-3203

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Wireshark 4.4.14/4.6.4

Timelineinfo

02/25/2026 Advisory disclosed
02/25/2026 +0 days CVE reserved
02/25/2026 +0 days VulDB entry created
03/02/2026 +5 days VulDB entry last update

Sourcesinfo

Product: wireshark.org

Advisory: wireshark.org
Status: Confirmed

CVE: CVE-2026-3203 (🔒)
GCVE (CVE): GCVE-0-2026-3203
GCVE (VulDB): GCVE-100-347776
EUVD: 🔒
CERT Bund: WID-SEC-2026-0536 - Wireshark: Mehrere Schwachstellen ermöglichen Denial of Service

Entryinfo

Created: 02/25/2026 15:53
Updated: 03/02/2026 03:52
Changes: 02/25/2026 15:53 (63), 02/25/2026 18:07 (1), 02/26/2026 16:04 (7), 03/02/2026 03:52 (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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