CVE-2026-6868 — Denial of Service

CVE-2026-6868 — Denial of Service

CVE-2026-6868 — HTTP 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-121, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2026-6868 updates and patches.

Related ATT&CK Techniques

🛡️ Detection Rules

2 rules · 6 SIEM formats

2 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.

high T1499 Impact

Wireshark HTTP Dissector Crash - CVE-2026-6868

Sigma YAML — free preview
title: Wireshark HTTP Dissector Crash - CVE-2026-6868
id: scw-2026-04-30-ai-1
status: experimental
level: high
description: |
  Detects the execution of Wireshark, the affected application, which could indicate an attempt to trigger the CVE-2026-6868 vulnerability leading to a denial of service.
author: SCW Feed Engine (AI-generated)
date: 2026-04-30
references:
  - https://shimiscyberworld.com/posts/nvd-CVE-2026-6868/
tags:
  - attack.impact
  - attack.t1499
logsource:
    category: process_creation
detection:
  selection:
      Image|startswith:
          - 'C:\Program Files\Wireshark\Wireshark.exe'
      condition: selection
falsepositives:
  - Legitimate administrative activity

Source: Shimi's Cyber World · License & reuse

✓ Sigma · Splunk SPL Sentinel KQL Elastic QRadar AQL Wazuh Get rules for your SIEM →

Indicators of Compromise

IDTypeIndicator
CVE-2026-6868 vulnerability CVE-2026-6868
CWE-121 weakness CWE-121
Source & Attribution
Source PlatformNVD
ChannelNational Vulnerability Database
PublishedApril 30, 2026 at 09:16 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.

Believe this infringes your rights? Submit a takedown request.

Related coverage

CVE-2026-6521 — Denial of Service

CVE-2026-6521 — OpenFlow v5 protocol dissector infinite loops in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service

vulnerabilityCVEmedium-severitydenial-of-servicecwe-835
/SCW Vulnerability Desk /MEDIUM /5.5 /⚑ 2 IOCs /⚙ 1 Sigma

CVE-2026-6520 — Denial of Service

CVE-2026-6520 — OpenFlow v6 protocol dissector infinite loop in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service

vulnerabilityCVEmedium-severitydenial-of-servicecwe-835
/SCW Vulnerability Desk /MEDIUM /5.5 /⚑ 2 IOCs /⚙ 2 Sigma

CVE-2026-6519 — Denial of Service

CVE-2026-6519 — MBIM protocol dissector infinite loop in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service

vulnerabilityCVEmedium-severitydenial-of-servicecwe-835
/SCW Vulnerability Desk /MEDIUM /5.5 /⚑ 2 IOCs /⚙ 2 Sigma