CVE-2022-22990: Westerndigital My Cloud OS

High severity, CVSS 8.8. EPSS: 2.1% chance of exploitation in the next 30 days.

A limited authentication bypass vulnerability was discovered that could allow an attacker to achieve remote code execution and escalate privileges on the My Cloud devices. Addressed this vulnerability by changing access token validation logic and rewriting rule logic on PHP scripts.

Affected products

• Westerndigital My Cloud OS: before 5.19.117 (fixed in 5.19.117)

Published 2022-01-13. Last modified 2026-06-17.