Western Digital My Cloud OS 5 Firmware 5.31.108


WDC Tracking Number: WDC-25006
Product Line/Web: My Cloud
Published: September 26, 2025

Last Updated: September 26, 2025

Description

My Cloud Firmware 5.31.108 includes updates to help improve the security of your My Cloud devices.

To take advantage of the latest security fixes, Western Digital recommends that users promptly update their devices to the latest firmware by clicking on the firmware update notification.

Product Impact
Last Updated
My Cloud PR2100
September 24, 2025
My Cloud PR4100
September 24, 2025
My Cloud EX4100
September 24, 2025
My Cloud EX2 Ultra
September 24, 2025
My Cloud Mirror Gen 2
September 24, 2025
My Cloud DL2100
September 24, 2025
My Cloud EX2100
September 24, 2025
My Cloud DL4100
September 24, 2025
My Cloud WDBCTLxxxxxx-10
September 24, 2025
My Cloud
September 24, 2025

For more information on the latest security updates, see the release notes.

Advisory Summary

Resolved a security issue related to remote code execution. 

Western Digital would like to thank w1th0ut for reporting this issue.

CVE Number: CVE-2025-30247

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