CVE-2017-17560 — An issue was discovered on Western Digital MyCloud PR4100 2

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 th

01What is this vulnerability?

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…

02Affected products

No structured affected-product list available — see references below for vendor advisories.

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2017-12-12T18:29:00.230
• Last modified: 2026-05-13T00:24:29.033

09References

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