CVE-2023-4249
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 · uneditedZavio CF7500, CF7300, CF7201, CF7501, CB3211, CB3212, CB5220, CB6231, B8520, B8220, and CD321 IP Cameras with firmware version M2.1.6.05 has a command injection vulnerability in their implementation of their binaries and handling of network requests.
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 confidenceMultiple Zavio IP camera models (CF7500, CF7300, CF7201, CF7501, CB3211, CB3212, CB5220, CB6231, B8520, B8220, CD321) running firmware M2.1.6.05 contain a command injection vulnerability in their network request handling implementation. An unauthenticated remote attacker can execute arbitrary operating system commands on the affected devices by injecting malicious commands through network inputs, potentially achieving full device compromise.
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= m2.1.6.05= m2.1.6.05= m2.1.6.05= m2.1.6.05= m2.1.6.05= m2.1.6.05= m2.1.6.05= m2.1.6.05CVSS 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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Identify the Zavio camera modelAccess the camera's web interface or check the device label/metadata to confirm the exact model number (CF7500, CF7300, CF7201, CF7501, CB3211, CB3212, CB5220, CB6231, B8520, B8220, or CD321).Affected if The model is one of the listed affected models.
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Check the installed firmware versionLog into the camera web interface and navigate to the System or About section to view the firmware version, or use the camera's API/ONVIF interface to query the firmware version.Affected if The firmware version is exactly M2.1.6.05.
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Verify the network management interface is enabledCheck the camera network settings to confirm the HTTP/HTTPS management interface is active and reachable on the network.Affected if The network management interface is enabled and accessible.
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Confirm network exposureDetermine if the camera management port (typically HTTP port 80 or HTTPS port 443) is directly accessible from untrusted networks rather than being isolated behind a firewall or VPN.Affected if The camera is directly accessible from untrusted networks.
A user is affected if they have a Zavio camera from the listed models running firmware version M2.1.6.05 with the network management interface enabled and exposed.
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.
From vendor dataApply the vendor-provided firmware update to address the command injection vulnerability. If no update is available, restrict network access to camera management interfaces and implement network segmentation to limit exposure.
- Consultation4.0 h
- Implementation8.0 h
- Testing12.0 h
- Review / QA6.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-4249 — 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-2023-4249 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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