Vulnerability Monitor

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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.

Security Impact Summary

This vulnerability carries a CRITICAL severity rating with a CVSS v3.1 score of 9.8, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 18 products from westerndigital, from westerndigital, from westerndigital and 15 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2019, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.

Published

2019-04-24T18:29:01.793

Last Modified

2026-06-17T02:44:55.150

Status

Modified

Source

[email protected]

Severity

CVSSv3.0: 9.8 (CRITICAL)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: PARTIAL
  • Availability Impact: PARTIAL
Exploitability Score

10.0

Impact Score

6.4

Weaknesses
  • Type: Primary
    CWE-521
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System westerndigital my_cloud_firmware < 2.31.174 Yes
Hardware westerndigital my_cloud - No
Operating System westerndigital my_cloud_mirror_gen2_firmware < 2.31.174 Yes
Hardware westerndigital my_cloud_mirror_gen2 - No
Operating System westerndigital my_cloud_ex2_ultra_firmware < 2.31.174 Yes
Hardware westerndigital my_cloud_ex2_ultra - No
Operating System westerndigital my_cloud_ex2100_firmware < 2.31.174 Yes
Hardware westerndigital my_cloud_ex2100 - No
Operating System westerndigital my_cloud_ex4100_firmware < 2.31.174 Yes
Hardware westerndigital my_cloud_ex4100 - No
Operating System westerndigital my_cloud_dl2100_firmware < 2.31.174 Yes
Hardware westerndigital my_cloud_dl2100 - No
Operating System westerndigital my_cloud_dl4100_firmware < 2.31.174 Yes
Hardware westerndigital my_cloud_dl4100 - No
Operating System westerndigital my_cloud_pr2100_firmware < 2.31.174 Yes
Hardware westerndigital my_cloud_pr2100 - No
Operating System westerndigital my_cloud_pr4100_firmware < 2.31.174 Yes
Hardware westerndigital my_cloud_pr4100 - No
References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For westerndigital's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.