CVE-2021-36226

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Published Feb 6, 2023 CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed

Description

Western Digital My Cloud devices before OS5 do not use cryptographically signed Firmware upgrade files.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

AND

cpe:2.3:o:westerndigital:my_cloud_os:*:*:*:*:*:*:*:*

cpe:2.3:h:westerndigital:my_cloud_pr4100:-:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
EUVD	EUVD-2021-22846	Western Digital My Cloud devices before OS5 do not use cryptographically signed Firmware upgrade files.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.808% probability within 30 days)

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://github.com/pedrib/PoC/blob/master/advisories/Pwn2Own/Tokyo_2020/weekend_destroyer/weekend_destroyer.md
https://krebsonsecurity.com/2021/07/another-0-day-looms-for-many-western-digital-users/
https://www.youtube.com/watch?v=vsg9YgvGBec

History

Mar 26, 2025 7:15 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Subscriptions

Westerndigital My Cloud Os My Cloud Pr4100

Weaknesses

CWE-347

Sources

CVE record Updated: Mar 26, 2025, 6:39 PM

Status: PUBLISHED
Assigner: mitre
Published: Feb 6, 2023, 12:00 AM
Updated: Mar 26, 2025, 6:39 PM
Reserved: Jul 8, 2021, 12:00 AM

View source JSON

Vulnrichment Updated: Aug 4, 2024, 12:54 AM

Updated: Aug 4, 2024, 12:54 AM

NVD Updated: Jun 17, 2026, 3:58 AM

Status: Modified
Published: Feb 6, 2023, 2:15 PM
Modified: Jun 17, 2026, 3:58 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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