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7.8
HIGH CVSS 3.1
CVE-2026-5405
Heap-based Buffer Overflow in Wireshark
Overview
Description

RDP protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service and possible code execution

Details
INFO

Published Date :

May 1, 2026, 12:16 a.m.

Last Modified :

June 30, 2026, 3:21 a.m.

Remotely Exploit :

No

Source :

[email protected]
Impact
Affected Products

The following products are affected by CVE-2026-5405 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Wireshark wireshark
: Total Affected Vendor : 1 | Products : 1
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 134c704f-9b21-4f2e-91b3-4a467353bcc0
CVSS 3.1 HIGH ceab7361-8a18-47b1-92ba-4d7d25f6715a
CVSS 3.1 HIGH [email protected]
CVSS 3.1 HIGH 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Solution
Update Wireshark to a patched version to fix the RDP dissector crash.
  • Update Wireshark to a fixed version.
  • Apply security patches for Wireshark.
  • Use updated protocol dissectors.
References
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-5405.

URL Resource
https://gitlab.com/wireshark/wireshark/-/issues/21105 Exploit Issue Tracking Third Party Advisory
https://www.wireshark.org/security/wnpa-sec-2026-17.html Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:20600
https://access.redhat.com/errata/RHSA-2026:26182
https://access.redhat.com/security/cve/CVE-2026-5405
https://bugzilla.redhat.com/show_bug.cgi?id=2464273
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5405.json
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-5405 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-5405 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-5405 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-5405 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

    Jun. 30, 2026

    Action Type Old Value New Value
    Added Affected [{'cpes': ['cpe:/o:redhat:enterprise_linux_eus:10.0'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream EUS (v. 10.0)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:10.2'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream (v. 10)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux_eus:10.0'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:10.2'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:6'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 6', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:7'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 7', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:8'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 8', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:9'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 9', 'defaultStatus': 'unaffected'}]
    Added CVSS V3.1 AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    Added CWE CWE-122
    Added Reference https://access.redhat.com/errata/RHSA-2026:20600
    Added Reference https://access.redhat.com/errata/RHSA-2026:26182
    Added Reference https://access.redhat.com/security/cve/CVE-2026-5405
    Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=2464273
    Added Reference https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5405.json
  • CVE Modified by [email protected]

    Jun. 17, 2026

    Action Type Old Value New Value
    Added Affected [{'vendor': 'Wireshark Foundation', 'product': 'Wireshark', 'versions': [{'status': 'affected', 'version': '4.6.0', 'lessThan': '4.6.5', 'versionType': 'semver'}, {'status': 'affected', 'version': '4.4.0', 'lessThan': '4.4.15', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}]
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Jun. 17, 2026

    Action Type Old Value New Value
    Added SSVC {'id': 'CVE-2026-5405', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-05-02T03:55:30.982524Z'}
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    May. 04, 2026

    Action Type Old Value New Value
    Removed Reference https://gitlab.com/wireshark/wireshark/-/work_items/21105
    Removed Reference Type https://gitlab.com/wireshark/wireshark/-/work_items/21105 Types: Exploit, Issue Tracking, Third Party Advisory
  • Initial Analysis by [email protected]

    May. 01, 2026

    Action Type Old Value New Value
    Added CWE CWE-787
    Added CPE Configuration OR *cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:* versions from (including) 4.4.0 up to (excluding) 4.4.15 *cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:* versions from (including) 4.6.0 up to (excluding) 4.6.5
    Added Reference Type GitLab Inc.: https://gitlab.com/wireshark/wireshark/-/issues/21105 Types: Exploit, Issue Tracking, Third Party Advisory
    Added Reference Type CISA-ADP: https://gitlab.com/wireshark/wireshark/-/work_items/21105 Types: Exploit, Issue Tracking, Third Party Advisory
    Added Reference Type GitLab Inc.: https://www.wireshark.org/security/wnpa-sec-2026-17.html Types: Vendor Advisory
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    May. 01, 2026

    Action Type Old Value New Value
    Added Reference https://gitlab.com/wireshark/wireshark/-/work_items/21105
  • New CVE Received by [email protected]

    May. 01, 2026

    Action Type Old Value New Value
    Added Description RDP protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service and possible code execution
    Added CVSS V3.1 AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    Added CWE CWE-122
    Added Reference https://gitlab.com/wireshark/wireshark/-/issues/21105
    Added Reference https://www.wireshark.org/security/wnpa-sec-2026-17.html
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
Base CVSS Score: 7.8
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact