CVE-2026-5401 — Denial of Service
CVE-2026-5401 — AFP Spotlight protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service
What This Means For You
- If your environment is affected by CWE-674, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2026-5401 updates and patches.
Related ATT&CK Techniques
🛡️ Detection Rules
1 rule · 6 SIEM formats1 detection rule auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
Wireshark AFP Protocol Dissector Crash (CVE-2026-5401)
title: Wireshark AFP Protocol Dissector Crash (CVE-2026-5401)
id: scw-2026-04-30-ai-1
status: experimental
level: critical
description: |
Detects the execution of Wireshark with command-line arguments that could trigger the AFP Spotlight protocol dissector crash (CVE-2026-5401), leading to a denial of service. This rule specifically targets the vulnerable versions of Wireshark and the known trigger mechanism.
author: SCW Feed Engine (AI-generated)
date: 2026-04-30
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-5401/
tags:
- attack.impact
- attack.t1499
logsource:
category: process_creation
detection:
selection:
Image|startswith:
- 'C:\Program Files\Wireshark\Wireshark.exe'
CommandLine|contains:
- 'afp://'
condition: selection
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-5401 | vulnerability | CVE-2026-5401 |
| CWE-674 | weakness | CWE-674 |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | April 30, 2026 at 10:16 UTC |
This content was curated and summarized by Shimi's Cyber World for informational purposes. It is not copied or republished in full. All intellectual property rights remain with the original author and source.
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