CVE-2019-18929: Western Digital My Cloud EX2 Ultra Firmware

High severity, CVSS 8.8. EPSS: 2.9% chance of exploitation in the next 30 days.

Western Digital My Cloud EX2 Ultra firmware 2.31.183 allows web users (including guest accounts) to remotely execute arbitrary code via a download_mgr.cgi stack-based buffer overflow.

Affected products

• Western Digital My Cloud EX2 Ultra Firmware: version 2.31.195 only

Published 2019-11-13. Last modified 2026-06-17.