CVE-2021-36224
CRITICALCVSS 9.8/10EPSS 1.19%
Last modified
CVE-2021-36224 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Western Digital My Cloud devices before OS5 have a nobody account with a blank password.. EPSS estimates a 1.19% chance of exploitation in the next 30 days.
Description
Western Digital My Cloud devices before OS5 have a nobody account with a blank password.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Westerndigital | My Cloud Os | < 5.02.104 |
References
- https://github.com/pedrib/PoC/blob/master/advisories/Pwn2Own/Tokyo_2020/weekend_destroyer/weekend_destroyer.mdExploit, Patch, Third Party Advisory
- https://krebsonsecurity.com/2021/07/another-0-day-looms-for-many-western-digital-users/Exploit, Third Party Advisory
- https://www.youtube.com/watch?v=vsg9YgvGBecExploit, Patch, Third Party Advisory
- https://github.com/pedrib/PoC/blob/master/advisories/Pwn2Own/Tokyo_2020/weekend_destroyer/weekend_destroyer.mdExploit, Patch, Third Party Advisory
- https://krebsonsecurity.com/2021/07/another-0-day-looms-for-many-western-digital-users/Exploit, Third Party Advisory
- https://www.youtube.com/watch?v=vsg9YgvGBecExploit, Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-36224?
Western Digital My Cloud devices before OS5 have a nobody account with a blank password.
How severe is CVE-2021-36224?
CVE-2021-36224 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.19% probability of exploitation in the next 30 days.
How do I fix CVE-2021-36224?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-36224?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST