CVE-2018-18601
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 · uneditedThe TK_set_deviceModel_req_handle function in the cloud communication component in Guardzilla GZ621W devices with firmware 0.5.1.4 has a Buffer Overflow.
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 confidenceA buffer overflow vulnerability exists in the TK_set_deviceModel_req_handle function within the cloud communication component of Guardzilla GZ621W devices running firmware version 0.5.1.4. The overflow occurs during device model request handling, allowing potential memory corruption and possibly remote code execution due to the high CVSS score.
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= 0.5.1.4CVSS 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
- High
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:H/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 device modelCheck the device label, packaging, or web interface for the model number to confirm it is a Guardzilla GZ621W deviceAffected if The device model is not Guardzilla GZ621W, then this specific CVE does not apply
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Determine the firmware versionAccess the device admin interface or check the system settings to locate the firmware version information. Compare against 0.5.1.4Affected if The installed firmware version is exactly 0.5.1.4 - this is the only affected version per the CVE
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Verify cloud communication is enabledCheck the device network settings or cloud connectivity configuration to confirm the cloud communication component is activeAffected if Cloud communication is disabled, the attack surface is reduced but the vulnerability still exists in the firmware if version matches
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Review network exposureCheck device network configuration to determine if the device is directly accessible from the internet or has open ports exposed externallyAffected if The device has open network exposure to the internet, the remote exploitation vector is present
You are affected if you have a Guardzilla GZ621W device running firmware version exactly 0.5.1.4 with cloud communication functionality enabled.
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 any available vendor firmware update; if none exists, restrict network exposure of the device and monitor for indicators of compromise, as this is a boundary-crossing buffer overflow in a network-facing component.
- Consultation2.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-18601 — 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-2018-18601 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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