HOMEVULNERABILITIESCVE-2019-9951
CRITICAL

CVE-2019-9951

CWE-434Published: April 24, 2019· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2019-9951 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

western_digital15 product(s)
my cloud mirror gen 2 firmwaremy cloud mirror gen 2my cloud ex2 ultra firmwaremy cloud ex2 ultramy cloud ex2100 firmwaremy cloud ex2100my cloud ex4100my cloud dl2100my cloud dl4100 firmwaremy cloud dl4100my cloud pr2100 firmwaremy cloud pr2100+3
Source: NVD CPE · 18 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://community.wd.com/t/new-release-my-cloud-firmware-versions-2-31-174-3-26-19/235932
ADVISORYhttps://support.wdc.com/downloads.aspx?g=2702&lang=en
ADVISORYhttps://community.wd.com/t/new-release-my-cloud-firmware-versions-2-31-174-3-26-19/235932
ADVISORYhttps://support.wdc.com/downloads.aspx?g=2702&lang=en

All References (8)

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

Quick Facts

CVE IDCVE-2019-9951
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-434
CISA KEVNo
Affected1 vendor(s)
PublishedApr 24, 2019

Related CVEs (CWE-434)

CVE-2024-50482
10.0
CVE-2024-50420
10.0
CVE-2019-7268
10.0
CVE-2019-10959
10.0
CVE-2024-50473
10.0
CVE-2024-51791
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2019-9951 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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