CVE-2019-9950

Western Digital My Cloud, My Cloud Mirror Gen2, My Cloud EX2 Ultra, My Cloud EX2100, My Cloud EX4100, My Cloud DL2100, My Cloud DL4100, My Cloud PR2100 and My Cloud PR4100 firmware before 2.31.174 is affected by an authentication bypass vulnerability. The login_mgr.cgi file checks credentials against /etc/shadow. However, the "nobody" account (which can be used to access the control panel API as a low-privilege logged-in user) has a default empty password, allowing an attacker to modify the My Cloud EX2 Ultra web page source code and obtain access to the My Cloud as a non-Admin My Cloud device user.

• CWE-521

• https://bnbdr.github.io/posts/wd/
• https://community.wd.com/t/new-release-my-cloud-firmware-versions-2-31-174-3-26-19/235932Vendor Advisory
• https://github.com/bnbdr/wd-rce/
• https://support.wdc.com/downloads.aspx?g=2702&lang=enVendor Advisory
• https://bnbdr.github.io/posts/wd/
• https://community.wd.com/t/new-release-my-cloud-firmware-versions-2-31-174-3-26-19/235932Vendor Advisory
• https://github.com/bnbdr/wd-rce/
• https://support.wdc.com/downloads.aspx?g=2702&lang=enVendor Advisory

Published

Apr 24, 2019

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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