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Vns3Application · Cohesive

CVE-2024-8806

CRITICAL · 9.8 CVSS v3.1 Published 2024-11-22
Fix available
A fix is available. Upgrade to 6.2.8 / 6.6.7 or later.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

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
Cohesive Networks VNS3 Command Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Cohesive Networks VNS3. Authentication is not required to exploit this vulnerability. The specific flaw exists within the web service, which listens on TCP port 8000 by default. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-24160.

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 · high confidence

Unauthenticated command injection in Cohesive Networks VNS3 web service (TCP port 8000). The application fails to validate user-supplied input before passing it to a system call, allowing attackers to execute arbitrary commands with root privileges.

MitigationApply vendor patch when available; immediately restrict network access to port 8000 via firewall or access control lists; consider disabling the web service if not required until patch is applied.

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
Vns3Application
Affected:< 6.2.8>= 6.6.0, < 6.6.7

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
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/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 if Cohesive VNS3 is installed
    Locate the VNS3 installation directory or check running processes for VNS3-related services
    Affected if VNS3 software is present on the system
  2. Determine the installed VNS3 version
    Run the VNS3 version command from the management interface or check the version file in the installation directory
    Affected if The version number is less than 6.2.8, or greater than or equal to 6.6.0 but less than 6.6.7
  3. Verify the web service is running on port 8000
    Check if TCP port 8000 is listening locally or remotely using netstat or similar network scanning tool
    Affected if Port 8000 is open and accepting connections
  4. Confirm network accessibility of the vulnerable service
    Attempt to access the web service locally or from remote hosts on port 8000 to determine if it is reachable
    Affected if The web service on port 8000 is accessible from network locations where attackers could reach it

A system is affected if Cohesive VNS3 is installed with a version in the ranges below 6.2.8 or 6.6.0 to below 6.6.7, and the web service on port 8000 is accessible.

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 6.2.8 / 6.6.7 or later
Fixed in 6.2.86.6.7
Interim mitigation

Apply vendor patch when available; immediately restrict network access to port 8000 via firewall or access control lists; consider disabling the web service if not required until patch is applied.

Recommended fix High confidence

VNS3 6.2.8+ or 6.6.7+ (or latest stable release from Cohesive Networks)

  1. 1. Identify the currently installed VNS3 version by checking the web interface or system documentation
  2. 2. If running VNS3 version < 6.2.8, plan upgrade to version 6.2.8 or later
  3. 3. If running VNS3 version >= 6.6.0 but < 6.6.7, plan upgrade to version 6.6.7 or later
  4. 4. Review upgrade documentation from Cohesive Networks (cohesive.net) for your specific version path
  5. 5. Schedule maintenance window as upgrade may require system restart
  6. 6. Perform backup of VNS3 configuration before upgrading
  7. 7. Download the appropriate updated VNS3 image/package from Cohesive Networks
  8. 8. Execute the upgrade following vendor-provided instructions

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

Fix this in Vns3 Scoped from the published advisory
  • Consultation3.0 h
  • Implementation6.0 h
  • Testing3.0 h
  • Review / QA2.0 h
14.0 hours of engineering $2,490
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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-2024-8806 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