VulnerabilityModified
CVE-2021-36226
Western Digital My Cloud devices before OS5 do not use cryptographically signed Firmware upgrade files.
CRITICAL 9.8EPSS 0.81%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.81%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Western Digital My Cloud devices before OS5 do not use cryptographically signed Firmware upgrade files.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.81% probability · 55th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-347
- Affected
- westerndigital/my cloud os
- Source
- cve@mitre.org
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, Patch, 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, Patch, Third Party Advisory
- https://www.youtube.com/watch?v=vsg9YgvGBecExploit, Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.