CVE-2024-8807
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 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-24176.
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 confidenceUnauthenticated command injection in Cohesive Networks VNS3 web service on TCP port 8000. The vulnerability stems from improper validation of user-supplied input before its use in a system call, allowing remote attackers to execute arbitrary code with root privileges without any authentication.
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
- 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 checksWork through these to decide whether this CVE applies to you.
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Verify if TCP port 8000 is open and listeningScan the target system for open port 8000 using a network scanner (e.g., nmap -p 8000 <target>) or check local listening ports with 'netstat -tuln | grep 8000' or 'ss -tuln | grep 8000'Affected if Port 8000 is open and accepting connections - this is a prerequisite for exploitation
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Determine the installed VNS3 versionAccess the VNS3 web interface on port 8000 and check the version information typically displayed in the UI, or query the API endpoint if known, or check version files on the system if accessibleAffected if The version cannot be determined but port 8000 is exposed - assume affected until proven otherwise
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Compare installed version against affected rangesReview the discovered version against the vulnerable ranges: versions < 6.2.8 or >= 6.6.0 but < 6.6.7Affected if The installed version falls within < 6.2.8 or >= 6.6.0 to < 6.6.7
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Confirm web service accepts unauthenticated requestsAttempt to access the VNS3 web service on port 8000 without providing credentials - the vulnerability allows unauthenticated command injectionAffected if The web interface is accessible without authentication on port 8000
If TCP port 8000 is exposed and the VNS3 version is either below 6.2.8 or between 6.6.0 and 6.6.7 (inclusive of 6.6.0 but exclusive of 6.6.7), the environment is vulnerable to unauthenticated command injection.
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
Apply vendor patches immediately; if unavailable, restrict network access to port 8000 via firewall or disable the web service until a patch is available.
VNS3 6.2.8 or later (for 6.2.x line); VNS3 6.6.7 or later (for 6.6.x line)
- 1. Identify the currently installed VNS3 version by checking the system or web interface.
- 2. If running version 6.2.x and less than 6.2.8: Plan upgrade to version 6.2.8 or later in the 6.2.x line.
- 3. If running version 6.6.0 through 6.6.6: Plan upgrade to version 6.6.7 or later in the 6.6.x line.
- 4. Download the appropriate updated VNS3 appliance/image from Cohesive Networks official sources.
- 5. Follow Cohesive Networks standard upgrade procedures for the VNS3 platform.
- 6. After upgrade, verify the web service on TCP port 8000 is functioning correctly.
- 7. Confirm the version has been updated by checking the VNS3 management interface.
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-8807 — 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-2024-8807 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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- Version or environment caveats, and links to real fixes
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