Executive Summary

Informations
Name CVE-2021-36226 First vendor Publication 2023-02-06
Vendor Cve Last vendor Modification 2025-03-26

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 9.8
Base Score 9.8 Environmental Score 9.8
impact SubScore 5.9 Temporal Score 9.8
Exploitabality Sub Score 3.9
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score N/A Attack Range N/A
Cvss Impact Score N/A Attack Complexity N/A
Cvss Expoit Score N/A Authentication N/A
Calculate full CVSS 2.0 Vectors scores

Detail

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

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-36226

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-347 Improper Verification of Cryptographic Signature

CPE : Common Platform Enumeration

TypeDescriptionCount
Os 1

Sources (Detail)

https://github.com/pedrib/PoC/blob/master/advisories/Pwn2Own/Tokyo_2020/weeke...
https://krebsonsecurity.com/2021/07/another-0-day-looms-for-many-western-digi...
https://www.youtube.com/watch?v=vsg9YgvGBec
Source Url

Alert History

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Date Informations
2025-03-26 21:21:49
  • Multiple Updates
2024-11-28 13:58:52
  • Multiple Updates
2023-02-15 05:27:25
  • Multiple Updates
2023-02-06 21:27:15
  • Multiple Updates
2023-02-06 17:27:18
  • First insertion