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Vulnerability record · CVE-2019-9951 · published 24 April 2019

CVE-2019-9951: Western digital my cloud mirror gen 2 firmware unrestricted file upload vulnerability

Western Digital · My Cloud Mirror Gen 2 Firmware

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 unauthenticated file upload vulnerability. The page web/jquery/uploader/uploadify.php can be accessed without any credentials, and allows uploading arbitrary files to any location on the attached storage.

9.8 CVSS 3.0 Critical EPSS 1.7% · top 24.1% CWE-434 · Unrestricted file upload
9.8CVSS 3.0 base score, v2 7.5
1.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
9Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

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 unauthenticated file upload vulnerability. The page web/jquery/uploader/uploadify.php can be accessed without any credentials, and allows uploading arbitrary files to any location on the attached storage.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

9 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2019-9951), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.