CVE-2017-17560

CRITICAL EXPLOITED

Western Digital MyCloud PR4100 2.30.172 - Unauthenticated Arbitrary File Write and RCE via Multi Uploadify

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2017-17560 has been observed exploited in the wild (reported by VulnCheck KEV). EIP tracks 2 public exploits from researchers including Metasploit, including a Metasploit module exploits/linux/http/wd_mycloud_multiupload_upload.

AI-analyzed exploit summary This Metasploit module exploits an unauthenticated file upload vulnerability in Western Digital MyCloud NAS devices, allowing arbitrary PHP file upload and remote code execution as root.

Description

An issue was discovered on Western Digital MyCloud PR4100 2.30.172 devices. The web administration component, /web/jquery/uploader/multi_uploadify.php, provides multipart upload functionality that is accessible without authentication and can be used to place a file anywhere on the device's file system. This allows an attacker the ability to upload a PHP shell onto the device and obtain arbitrary code execution as root.

Exploits (2)

exploitdb WORKING POC VERIFIED
by Metasploit · rubyremotephp
https://www.exploit-db.com/exploits/43356

This Metasploit module exploits an unauthenticated file upload vulnerability in Western Digital MyCloud NAS devices, allowing arbitrary PHP file upload and remote code execution as root.

Classification
Working Poc 100%
Attack Type
Rce
Complexity
Trivial
Reliability
Reliable
Target: Western Digital MyCloud NAS (multiple versions)
No auth needed
Prerequisites: Network access to the target device · Vulnerable multi_uploadify.php endpoint
devstral-2 · analyzed Feb 16, 2026 Full analysis →
metasploit WORKING POC EXCELLENT
rubypocphp
https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/http/wd_mycloud_multiupload_upload.rb

This Metasploit module exploits an unauthenticated file upload vulnerability in Western Digital MyCloud NAS devices, allowing arbitrary PHP file uploads to the webroot for remote code execution as root.

Classification
Working Poc 100%
Attack Type
Rce
Complexity
Trivial
Reliability
Reliable
Target: Western Digital MyCloud NAS (versions affected by CVE-2017-17560)
No auth needed
Prerequisites: Network access to the target device · Vulnerable endpoint exposed
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3
Core References
Exploit, Third Party Advisory x_refsource_misc
https://download.exploitee.rs/file/generic/Exploiteers-DEFCON25.pdf
Exploit, Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/43356/
Third Party Advisory x_refsource_misc
https://github.com/rapid7/metasploit-framework/pull/9248

Scores

CVSS v3 9.8
EPSS 0.7340
EPSS Percentile 99.4%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

VulnCheck KEV 2024-01-22
CWE
CWE-287
Status published
Products (1)
westerndigital/my_cloud_pr4100_firmware 2.30.172
Published Dec 12, 2017
Tracked Since Feb 18, 2026