Auth bypass in Westerndigital My Cloud OS
CVE-2021-36225
Western Digital My Cloud devices before OS5 allow REST API access by low-privileged accounts, as demonstrated by API commands for firmware uploads and installation.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.010 (62.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 62.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
Weakness classification (CWE)
References
- krebsonsecurity.com/2021/07/another-0-day-looms-for-many-western-digital-users/ (Exploit, Patch, Third Party Advisory)
- www.youtube.com/watch (Exploit, Patch, Third Party Advisory)
- github.com/pedrib/PoC/blob/master/advisories/Pwn2Own/Tokyo_2020/weekend_destroy… (Exploit, Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-36225?
- CVE-2021-36225 is a high-severity vulnerability in Westerndigital My Cloud OS, classified under Missing Authorization. CVSS score: 8.8/10. Published 2023-02-06.
- How severe is CVE-2021-36225?
- High severity. CVSS v3 base score is 8.8 out of 10.