CVE-2018-21102
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 · uneditedNETGEAR ReadyNAS devices before 6.9.3 are affected by CSRF.
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 confidenceCross-Site Request Forgery (CSRF) vulnerability in NETGEAR ReadyNAS devices prior to version 6.9.3 allows remote attackers to trick authenticated users into executing unintended administrative actions on the device by crafting malicious requests.
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>= 6.0, < 6.9.3CVSS 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
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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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Confirm device modelAccess the ReadyNAS web administration interface and navigate to System > Settings > About, or log in via SSH and run 'version' or 'cat /etc/version' to identify the device as a NETGEAR ReadyNAS.Affected if The device is a NETGEAR ReadyNAS.
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Check firmware versionIn the web UI, go to System > Settings > About and locate the firmware version displayed. Via SSH, run 'rnanorafwutil get_version' or check '/etc/os-version' file.Affected if The firmware version cannot be determined or is not visible.
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Compare version to vulnerable rangeTake the installed firmware version number identified in the previous step and compare it against the affected range: versions 6.0 through 6.9.2.x are vulnerable. Version 6.9.3 and later are patched.Affected if The installed version is 6.0, 6.1, 6.2, 6.3, 6.4, 6.5, 6.6, 6.7, 6.8, or any 6.9.0 through 6.9.2.x release.
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Verify administrative access exposureCheck if the ReadyNAS admin web interface (port 443 or 8080) is accessible from untrusted networks. Review router/firewall rules to determine if remote management ports are exposed to the internet.Affected if The administrative interface is reachable from outside the local network without VPN or firewall restrictions.
A user is affected if they are running NETGEAR ReadyNAS firmware version 6.0 through 6.9.2.x on their device.
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 data6.9.3
Upgrade NETGEAR ReadyNAS firmware to version 6.9.3 or later to obtain the vendor patch; until then, minimize administrative access and monitor for suspicious activity.
- Consultation4.0 h
- Implementation8.0 h
- Testing8.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-21102 — 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-2018-21102 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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