PatchTheCVECVE-2019-9949: Western Digital My Cloud Cloud, Mirror Gen2, EX2 Ultra, EX2100, EX4100, DL2100, DL4100, PR2100 and PR4100 befo
CVE-2019-9949 is a high-severity flaw (CVSS 8.8) 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 Cloud, Mirror Gen2, EX2 Ultra, EX2100, EX4100, DL2100, DL4100, PR2100 and PR4100 before firmware 2.31.183 are affected by a code execution (as root, starting from a low-privilege user session) vulnerability. The cgi-bin/webfile_mgr.cgi file allows arbitrary file write by abusing symlinks. Specifically, this occurs by uploading a tar archive that contains a symbolic link, then uploading another archive that writes a file t
Why this priority
- High severity
- Public exploit reference
A fixed release or distro patch exists.
Risk facts
| CVSS score | 8.8 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 3.0% (top 13%) |
| CISA exploited list | No |
| Weakness | CWE-59 |
| Published | 2019-05-23 |
| 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-2019-9949?
my cloud firmware: upgrade to 2.31.183; my cloud mirror gen2 firmware: upgrade to 2.31.183; my cloud ex2 ultra firmware: upgrade to 2.31.183. Exact commands for each OS are on this page.
Is CVE-2019-9949 being exploited?
CVE-2019-9949 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-2019-9949 affect?
CVE-2019-9949 affects my cloud firmware, my cloud mirror gen2 firmware, my cloud ex2 ultra firmware. Severity is high (CVSS 8.8). Western Digital My Cloud Cloud, Mirror Gen2, EX2 Ultra, EX2100, EX4100, DL2100, DL4100, PR2100 and PR4100 before firmware 2.31.183 are affected by a code execution (as root, starting from a low-privilege user session) vulnerability. The cgi
How urgent is CVE-2019-9949?
Priority 58/100. High severity; Public exploit reference
Software pages
Western Digital vulnerabilities
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