CVE-2022-36331
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 · uneditedWestern Digital My Cloud, My Cloud Home, My Cloud Home Duo, and SanDisk ibi devices were vulnerable to an impersonation attack that could allow an unauthenticated attacker to gain access to user data. This issue affects My Cloud OS 5 devices: before 5.25.132; My Cloud Home and My Cloud Home Duo: before 8.13.1-102; SanDisk ibi: before 8.13.1-102.
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 confidenceAuthentication bypass vulnerability in Western Digital My Cloud NAS devices allowing unauthenticated attackers to impersonate legitimate users and access stored data without credentials.
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< 5.25.132< 5.25.132< 5.25.132< 5.25.132< 5.25.132< 5.25.132< 5.25.132< 5.25.132CVSS 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
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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 My Cloud device modelLog into the My Cloud dashboard or check the device label to confirm the exact model (Pr2100, Pr4100, Ex4100, Ex2 Ultra, Mirror G2, Dl2100, Dl4100, or Ex2100)Affected if The device is one of the eight affected models listed in the CVE
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Determine the installed firmware versionIn the My Cloud OS 5 web interface, go to Settings > About > Firmware Version, or access the device via SSH and run: cat /etc/os-release or cat /var/config/buildAffected if The firmware version is below 5.25.132 (for example, 5.25.100, 5.24.x, or earlier)
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Confirm network accessibility of the deviceVerify that the My Cloud device is reachable from untrusted networks (WAN) or check port forwarding/DDNS configuration on your routerAffected if The device is exposed to the internet or untrusted LAN segments without proper network segmentation
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Check for unauthorized access indicatorsReview My Cloud access logs under Settings > Diagnostics > Access Logs for unexpected IP addresses or sessions without corresponding login eventsAffected if There are login or file access events from IPs you do not recognize, or sessions occurring without valid credentials in the logs
You are affected if your device is one of the eight listed models AND is running firmware version 5.25.132 or lower, especially if it is network-accessible from untrusted networks.
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 · scoped5.25.132
Apply vendor-supplied firmware updates: My Cloud OS 5 to version 5.25.132 or later; My Cloud Home, My Cloud Home Duo, and SanDisk ibi to version 8.13.1-102 or later.
My Cloud OS 5 Firmware version 5.25.132 or later
- Access the Web UI of the affected My Cloud device by navigating to the device's IP address in a web browser
- Locate the Settings or Administration section in the web interface
- Find the Firmware Update or System Update option
- Check the current firmware version to confirm it is below 5.25.132
- Select the option to check for updates or manually upload firmware version 5.25.132
- Initiate the firmware upgrade process and wait for it to complete
- After the device reboots, verify the firmware version has been updated to 5.25.132 or later
- Alternatively, download the firmware update from the official Western Digital support website and use the manual firmware upload feature in the device settings
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-36331 — 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-2022-36331 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
- No spam, self-promotion, credentials, or personal data