CVE-2022-29838 in My Cloud
Summary
by MITRE • 12/09/2022
Improper Authentication vulnerability in the encrypted volumes and auto mount features of Western Digital My Cloud devices allows insecure direct access to the drive information in the case of a device reset. This issue affects: Western Digital My Cloud My Cloud versions prior to 5.25.124 on Linux.
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Analysis
by VulDB Data Team • 05/23/2026
The CVE-2022-29838 vulnerability represents a critical improper authentication flaw within Western Digital My Cloud storage devices that specifically impacts the encrypted volumes and auto mount functionalities. This weakness stems from inadequate access controls during device reset operations, creating a scenario where unauthorized parties can gain direct access to drive information without proper authentication mechanisms. The vulnerability is particularly concerning because it undermines the fundamental security assumptions of encrypted storage systems, where data protection relies on proper authentication protocols to prevent unauthorized access to sensitive information. The affected devices operate on Linux-based systems and are specifically vulnerable in versions prior to 5.25.124, indicating that this was a known issue that required firmware updates to address.
The technical implementation of this vulnerability exploits a design flaw in how the device handles authentication during reset procedures. When a My Cloud device undergoes a reset operation, the system fails to properly invalidate or re-authenticate access controls that were previously established for encrypted volumes. This creates a window of opportunity where drive information remains accessible through direct access methods, bypassing the normal authentication mechanisms that should protect the encrypted data. The flaw essentially allows an attacker to access the storage volumes without proper credentials, potentially exposing sensitive user data, personal files, and business information stored on these devices. This type of vulnerability aligns with CWE-287, which addresses improper authentication issues in software systems.
The operational impact of this vulnerability extends beyond simple data exposure, as it represents a complete breakdown in the security model of the storage device. Attackers with physical access to reset-capable devices can exploit this weakness to gain unauthorized access to encrypted volumes, potentially compromising the entire data integrity and confidentiality assurances provided by the encryption mechanisms. This vulnerability particularly affects enterprise and home users who rely on My Cloud devices for secure data storage, as it undermines the trust placed in the device's security features. The implications are significant for organizations that store sensitive information on these devices, as the vulnerability could enable data breaches without requiring network access or sophisticated attack vectors.
Mitigation strategies for this vulnerability primarily involve updating the affected My Cloud devices to firmware version 5.25.124 or later, which contains the necessary patches to address the authentication flaw. Users should immediately check for firmware updates through the device's management interface or Western Digital's official support channels. Additionally, network administrators should implement monitoring protocols to detect unauthorized device reset activities, as these operations are often the trigger point for exploitation. The vulnerability demonstrates the importance of proper access control implementation during system recovery operations, aligning with ATT&CK technique T1562.001 which covers "Disable or Modify Tools" and emphasizes the need for secure reset and recovery procedures. Organizations should also consider implementing additional security measures such as physical security controls for storage devices and regular security assessments of networked storage systems to prevent exploitation of similar authentication flaws.