CVE-2022-36327: Westerndigital My Cloud Home Duo Firmware

Critical severity, CVSS 9.8. EPSS: 1.5% chance of exploitation in the next 30 days.

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability that could allow an attacker to write files to locations with certain critical filesystem types leading to remote code execution was discovered in Western Digital My Cloud Home, My Cloud Home Duo, SanDisk ibi and Western Digital My Cloud OS 5 devices. This issue requires an authentication bypass issue to be triggered before this can be exploited.  This issue affects My Cloud Home and My Cloud Home Duo: before 9.4.0-191; ibi: before 9.4.0-191; My Cloud OS 5: before 5.26.202.

Affected products

• Westerndigital My Cloud Home Duo Firmware: before 9.4.0-191 (fixed in 9.4.0-191)
• Westerndigital My Cloud Home Firmware: before 9.4.0-191 (fixed in 9.4.0-191)
• Westerndigital My Cloud OS 5: before 5.26.202 (fixed in 5.26.202)
• Westerndigital Sandisk Ibi Firmware: before 9.4.0-191 (fixed in 9.4.0-191)

Published 2023-05-18. Last modified 2026-06-17.