CVE-2024-8808
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 · uneditedCohesive 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 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-24177.
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 confidenceAuthenticated command injection vulnerability in Cohesive Networks VNS3 web service (TCP port 8000). The flaw results from insufficient validation of user-supplied input before passing it to a system call, allowing remote attackers to execute arbitrary code with root privileges.
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< 6.2.8>= 6.6.0, < 6.6.7CVSS 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 checksWork through these to decide whether this CVE applies to you.
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Verify VNS3 web service is accessible on port 8000Run 'netstat -tlnp | grep 8000' or 'ss -tlnp | grep 8000' to check if the VNS3 web service is listening on TCP port 8000Affected if Port 8000 is listening and accessible from an untrusted network
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Determine installed VNS3 versionAccess the VNS3 management UI or API and check the version displayed in the web interface, or query the API endpoint for version information if availableAffected if The installed version is less than 6.2.8, or greater than or equal to 6.6.0 but less than 6.6.7
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Check network exposure of management port 8000Review firewall rules and network access controls to determine if port 8000 is exposed to untrusted or public networks. Use 'iptables -L -n' or check cloud security group settingsAffected if Port 8000 allows connections from IP addresses outside trusted management networks
You are affected if VNS3 is listening on port 8000, the installed version falls within < 6.2.8 or >= 6.6.0 to < 6.6.7, and the management interface is accessible from untrusted networks.
Generated from the published advisory. Verify against your own configuration.
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 · scoped6.2.86.6.7
Restrict network access to port 8000 to trusted management IPs, enforce strong authentication credentials, and apply vendor-provided patches when available. Consider network segmentation to limit exposure of the management interface.
VNS3 version 6.6.7 or later (or 6.2.8+ for the 6.2.x branch)
- 1. Backup the current VNS3 configuration and any critical data
- 2. Review the upgrade documentation for VNS3 at cohesive.net for version-specific upgrade procedures
- 3. Ensure network access to the VNS3 management interface on TCP port 8000 is restricted to authorized administrators only
- 4. Perform the upgrade to VNS3 version 6.6.7 or later (or 6.2.8+ if staying on the 6.2.x branch)
- 5. After upgrade, verify the web service is functioning correctly and the command injection vulnerability is no longer present
- 6. Confirm the version number has been updated post-upgrade
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation3.0 h
- Implementation6.0 h
- Testing4.0 h
- Review / QA3.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-8808 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2024-8808 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- 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
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