PatchTheCVECVE-2019-9950: Western Digital My Cloud, My Cloud Mirror Gen2, My Cloud EX2 Ultra, My Cloud EX2100, My Cloud EX4100, My Cloud
CVE-2019-9950 is a critical-severity flaw (CVSS 9.8) affecting my cloud firmware, my cloud mirror gen2 firmware, my cloud ex2 ultra firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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
Why this priority
- Critical severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 2.3% (top 17%) |
| CISA exploited list | No |
| Weakness | CWE-521 |
| Published | 2019-04-24 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2019-9950?
my cloud firmware: upgrade to 2.31.174; my cloud mirror gen2 firmware: upgrade to 2.31.174; my cloud ex2 ultra firmware: upgrade to 2.31.174. Exact commands for each OS are on this page.
Is CVE-2019-9950 being exploited?
CVE-2019-9950 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2019-9950 affect?
CVE-2019-9950 affects my cloud firmware, my cloud mirror gen2 firmware, my cloud ex2 ultra firmware. Severity is critical (CVSS 9.8). 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 vul
How urgent is CVE-2019-9950?
Priority 60/100. Critical severity; Remotely exploitable, no login, no user action
Software pages
Western Digital vulnerabilities
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