Severe Security Flaw in Western Digital My Cloud NAS Exposed

Severe Security Flaw in Western Digital My Cloud NAS Devices Allows Attackers to Run Malicious Code

Last updated on October 2, 2025October 1, 2025 by RS Web Solutions on Categories Internet & Cybersecurity, Programming

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Security Alert: Western Digital’s My Cloud Devices Vulnerability

Western Digital has issued critical security updates addressing a significant vulnerability present in various My Cloud network-attached storage (NAS) devices.

The vulnerability, identified as CVE-2025-30247, could enable a remote adversary to execute arbitrary code on the affected devices, potentially culminating in total device compromise.

The company resolved this high-severity issue through the release of My Cloud Firmware version 5.31.108, which occurred on September 24, 2025.

A successful exploitation of this remote code execution (RCE) vulnerability would grant an unauthenticated attacker access to the NAS device’s security protocols.

This breach could lead to grave consequences, including data theft, malware or ransomware installation, and the incorporation of the compromised device into a botnet for further malicious exploits.

Considering that NAS devices commonly house sensitive personal and enterprise data, the repercussions of such a breach could be catastrophic.

Western Digital firmly urges all users to swiftly upgrade their devices to the latest firmware to neutralize the threat. The update can be conveniently implemented via the firmware update prompt within the device’s administrative interface.

Gratitude is extended to the security researcher w1th0ut for identifying and responsibly reporting this vulnerability, empowering the company to devise and distribute an appropriate patch.

Affected Devices and Mitigation Strategies

The critical security update is imperative for a wide array of products within the My Cloud family. Western Digital has confirmed that the following devices are at risk and should be upgraded to firmware version 5.31.108 or later to safeguard against CVE-2025-30247.

My Cloud PR2100
My Cloud PR4100
My Cloud EX4100
My Cloud EX2 Ultra
My Cloud Mirror Gen 2
My Cloud DL2100
My Cloud EX2100
My Cloud DL4100
My Cloud WDBCTLxxxxxx-10
My Cloud

This incident underscores the persistent security vulnerabilities linked to internet-connected storage solutions. Cybercriminals frequently probe for and target unpatched NAS devices due to the lucrative data they typically contain.

Implementing security updates promptly upon their release is among the most efficacious strategies users can adopt to fortify their data against unauthorized access and cyber threats.

Users are also encouraged to revisit their device configurations and activate automatic updates whenever feasible, thereby enhancing their security posture.

Source link: Cybersecuritynews.com.

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