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CVE-2021-36224

Western Digital My Cloud devices before OS5 have a nobody account with a blank password.

9.8 Critical

Western Digital My Cloud devices before OS5 have a nobody account with a blank password.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

1.19%Up 0.3 points since Feb 7, 2023
90%50%10%1%

What each source reports

NVD Score used 9.8

Western Digital My Cloud devices before OS5 have a nobody account with a blank password.

Record
CVE-2021-36224
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-798
Updated
2026-11-02
CVE List No score

Western Digital My Cloud devices before OS5 have a nobody account with a blank password.

Record
CVE-2021-36224
Updated
2026-11-02
EUVDEUVD-2021-22844 No score

Western Digital My Cloud devices before OS5 have a nobody account with a blank password.

Record
EUVD-2021-22844
Updated
2026-11-03
GitHub AdvisoriesGHSA-hj2g-q4fc-38mp 9.8

Western Digital My Cloud devices before OS5 have a nobody account with a blank password.

Western Digital My Cloud devices before OS5 have a nobody account with a blank password.

Record
GHSA-hj2g-q4fc-38mp
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-798
Updated
2026-11-02

Affected products

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-36224 is a critical vulnerability (CVSS 9.8) in Westerndigital My Cloud Os, published February 6, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.19%, the 68th percentile. No source names a fixed version.

References

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