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Insightconnect TcpdumpApplication · Rapid7

CVE-2026-8658

HIGH · 8.8 CVSS v3.1 Published 2026-06-25
Fix available
A fix is available. Upgrade to 2.0.0 or later.
See remediation →
94/100
Remediation priority · Urgent
Remotely reachable Zero-click 8 weeks old

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
OS Command Injection vulnerability in Rapid7 InsightConnect Tcpdump Plugin on Linux allows authenticated attackers to execute arbitrary OS commands via the options or filter parameters due to insufficient input sanitization in shell command construction.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

OS command injection vulnerability in the Rapid7 InsightConnect Tcpdump Plugin on Linux allows authenticated attackers to execute arbitrary OS commands through the 'options' or 'filter' parameters due to insufficient input sanitization during shell command construction.

MitigationImplement strict input validation and sanitization for the options and filter parameters, preferably using parameterized command execution instead of shell string interpolation to prevent command injection.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Insightconnect TcpdumpApplication
Affected:< 2.0.0

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify InsightConnect Tcpdump plugin installation
    Locate the Rapid7 InsightConnect Tcpdump plugin in your environment and retrieve its version number through the plugin management interface or installed components list
    Affected if the plugin version is present and is less than 2.0.0
  2. Confirm Linux environment
    Verify the operating system where InsightConnect is running is Linux, as this vulnerability specifically affects the Linux version of the plugin
    Affected if the plugin is running on a Linux host
  3. Check for active plugin configurations
    Inspect the Tcpdump plugin configurations or workflow definitions that reference this plugin to identify if the 'options' or 'filter' parameters are exposed to user input
    Affected if the 'options' or 'filter' parameters accept untrusted user-supplied values without validation
  4. Review plugin input handling
    Examine how the plugin processes the options and filter parameters - look for direct shell command construction or string interpolation in plugin logs or configuration
    Affected if the plugin constructs shell commands using unsanitized input from these parameters

A user is affected if they have the InsightConnect Tcpdump plugin installed with version below 2.0.0 on Linux and the plugin accepts unvalidated input through its 'options' or 'filter' parameters.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 2.0.0 or later
Fixed in 2.0.0
Interim mitigation

Implement strict input validation and sanitization for the options and filter parameters, preferably using parameterized command execution instead of shell string interpolation to prevent command injection.

Recommended fix Moderate confidence

InsightConnect Tcpdump Plugin version 2.0.0

  1. 1. Access the InsightConnect platform administration interface
  2. 2. Navigate to the Plugins or Integrations section
  3. 3. Locate the Tcpdump plugin in the list of installed plugins
  4. 4. Check the current installed version - if it shows a version below 2.0.0, an update is required
  5. 5. Initiate the plugin update through the platform's update mechanism
  6. 6. Verify the update was successful by confirming the plugin now shows version 2.0.0 or higher
  7. 7. Test the Tcpdump plugin functionality to ensure it operates correctly after the upgrade

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Insightconnect Tcpdump Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA3.0 h
21.0 hours of engineering $3,680
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-8658 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data