CVE-2020-12830
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 · uneditedAddressed multiple stack buffer overflow vulnerabilities that could allow an attacker to carry out escalation of privileges through unauthorized remote code execution in Western Digital My Cloud devices before 5.04.114.
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 stack buffer overflow vulnerabilities in Western Digital My Cloud firmware before version 5.04.114 allow unauthenticated remote attackers to execute arbitrary code with elevated privileges, potentially leading to complete 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< 5.04.114CVSS 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 your My Cloud device modelLocate your Western Digital My Cloud NAS device and confirm the model number is a My Cloud series device (e.g., My Cloud, My Cloud Mirror, My Cloud EX2, etc.)Affected if Device is a Western Digital My Cloud NAS
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Check firmware version via web interfaceLog into the My Cloud dashboard (typically at http://mycloud.local or the device's IP address), navigate to Settings > About, and locate the firmware version displayedAffected if Firmware version shown is below 5.04.114
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Check firmware version via CLIAccess the device via SSH or telnet if enabled, then run the command: cat /etc/version or cat /etc/firmware_versionAffected if Firmware version returned is below 5.04.114
You are affected if your Western Digital My Cloud device is running firmware version 5.04.113 or earlier.
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 · scoped5.04.114
Upgrade My Cloud firmware to version 5.04.114 or later; if immediate patching is not feasible, isolate the device behind a firewall and disable remote access features to reduce attack surface.
My Cloud Firmware version 5.04.114 or later
- Download the My Cloud firmware version 5.04.114 or later from the official Western Digital support site (support.wdc.com or www.westerndigital.com)
- Access the My Cloud device web interface
- Navigate to Settings > Firmware Update or similar firmware management section
- Upload and apply the downloaded firmware version 5.04.114 or later
- Allow the device to complete the firmware update process and restart
- Verify the firmware version has been successfully updated to 5.04.114 or later
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation2.0 h
- Testing3.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2020-12830 — 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-2020-12830 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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