CVE-2017-17560

9.8 criticalEPSS 73%

Critical (9.8) in westerndigital my cloud pr4100 firmware. EPSS 73% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.0

9.8 critical

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

EPSS: 73% chance of exploitation in the next 30 days; higher than 99% of CVEs (scores of 2026-10-31)
CWE: CWE-287
Published: 2017-12-12
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

westerndigital:my_cloud_pr4100_firmware

References

https://download.exploitee.rs/file/generic/Exploiteers-DEFCON25.pdf
https://github.com/rapid7/metasploit-framework/pull/9248
https://www.exploit-db.com/exploits/43356/
https://download.exploitee.rs/file/generic/Exploiteers-DEFCON25.pdf
https://github.com/rapid7/metasploit-framework/pull/9248

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