CVE-2026-5657 — Denial of Service
CVE-2026-5657 — iLBC codec 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-415, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2026-5657 updates and patches.
Related ATT&CK Techniques
🛡️ Detection Rules
2 rules · 6 SIEM formats2 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
Wireshark iLBC Codec Denial of Service Attempt (CVE-2026-5657)
title: Wireshark iLBC Codec Denial of Service Attempt (CVE-2026-5657)
id: scw-2026-04-30-ai-1
status: experimental
level: high
description: |
Detects attempts to trigger a denial of service vulnerability (CVE-2026-5657) in Wireshark by processing a specially crafted .ilbc file. This rule specifically looks for the Wireshark executable being launched with a command line argument referencing an .ilbc file, which is indicative of an exploit attempt targeting the iLBC codec.
author: SCW Feed Engine (AI-generated)
date: 2026-04-30
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-5657/
tags:
- attack.execution
- attack.t1204.002
logsource:
category: process_creation
detection:
selection:
Image|endswith:
- 'wireshark.exe'
CommandLine|contains:
- '.ilbc'
condition: selection
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-5657 | vulnerability | CVE-2026-5657 |
| CWE-415 | weakness | CWE-415 |
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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