CVE-2019-9950
highpriority · track · 40EPSS 0.023 · 83 %ileEUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (10)
Products and version ranges known to be affected.
- westerndigital my cloud dl2100 firmware< 2.31.174nvdUScpe:2.3:o:westerndigital:my_cloud_dl2100_firmware:*:*:*:*:*:*:*:*
- westerndigital my cloud dl4100 firmware< 2.31.174nvdUScpe:2.3:o:westerndigital:my_cloud_dl4100_firmware:*:*:*:*:*:*:*:*
- westerndigital my cloud ex2 ultra firmware< 2.31.174nvdUScpe:2.3:o:westerndigital:my_cloud_ex2_ultra_firmware:*:*:*:*:*:*:*:*
- westerndigital my cloud ex2100 firmware< 2.31.174nvdUScpe:2.3:o:westerndigital:my_cloud_ex2100_firmware:*:*:*:*:*:*:*:*
- westerndigital my cloud ex4100 firmware< 2.31.174nvdUScpe:2.3:o:westerndigital:my_cloud_ex4100_firmware:*:*:*:*:*:*:*:*
- westerndigital my cloud firmware< 2.31.174nvdUScpe:2.3:o:westerndigital:my_cloud_firmware:*:*:*:*:*:*:*:*
- westerndigital my cloud mirror gen2 firmware< 2.31.174nvdUScpe:2.3:o:westerndigital:my_cloud_mirror_gen2_firmware:*:*:*:*:*:*:*:*
- westerndigital my cloud pr2100 firmware< 2.31.174nvdUScpe:2.3:o:westerndigital:my_cloud_pr2100_firmware:*:*:*:*:*:*:*:*
- westerndigital my cloud pr4100 firmware< 2.31.174nvdUScpe:2.3:o:westerndigital:my_cloud_pr4100_firmware:*:*:*:*:*:*:*:*
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (13)
External citations — patches, advisories, analysis.
- https://bnbdr.github.io/posts/wd/cnnvd
- https://community.wd.com/t/new-release-my-cloud-firmware-versions-2-31-174-3-26-19/235932cnnvd
- https://github.com/bnbdr/wd-rce/cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2019-9950cnnvd
- https://support.wdc.com/downloads.aspx?g=2702&lang=encnnvd
- https://bnbdr.github.io/posts/wd/enisa_euvd
- https://community.wd.com/t/new-release-my-cloud-firmware-versions-2-31-174-3-26-19/235932enisa_euvd
- https://github.com/bnbdr/wd-rce/enisa_euvd
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