What is the severity of ZDI-22-076?

The severity of ZDI-22-076 is classified as high due to the potential for arbitrary code execution.

How do I fix ZDI-22-076?

To fix ZDI-22-076, update the firmware of the Western Digital MyCloud PR4100 to the latest version provided by Western Digital.

Who is affected by ZDI-22-076?

ZDI-22-076 affects installations of the Western Digital MyCloud PR4100 that are not using the latest firmware.

What type of attack does ZDI-22-076 involve?

ZDI-22-076 involves network-adjacent attacks that exploit a flaw in the authentication mechanism.

Can ZDI-22-076 be exploited remotely?

No, ZDI-22-076 requires that the attacker is on the same local network as the affected device.

Vulnerability/
ZDI-22-076

high

30/1/2025

ZDI-22-076: (Pwn2Own) Western Digital MyCloud PR4100 cloudAccess Command Injection Remote Code Execution Vulnerability

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Western Digital MyCloud PR4100. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the cloudAccess endpoint. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root.

Affected Software	Affected Version	How to fix
Western Digital My Cloud PR4100

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Reference Links

Frequently Asked Questions

What is the severity of ZDI-22-076?
The severity of ZDI-22-076 is classified as high due to the potential for arbitrary code execution.
How do I fix ZDI-22-076?
To fix ZDI-22-076, update the firmware of the Western Digital MyCloud PR4100 to the latest version provided by Western Digital.
Who is affected by ZDI-22-076?
ZDI-22-076 affects installations of the Western Digital MyCloud PR4100 that are not using the latest firmware.
What type of attack does ZDI-22-076 involve?
ZDI-22-076 involves network-adjacent attacks that exploit a flaw in the authentication mechanism.
Can ZDI-22-076 be exploited remotely?
No, ZDI-22-076 requires that the attacker is on the same local network as the affected device.

agent/references
agent/type
agent/softwarecombine
agent/severity
agent/title
agent/description
agent/event
agent/source
agent/tags
collector/zdi-advisory
source/ZDI
alias/ZDI-22-076
alias/ZDI-CAN-15872
alias/CVE-2022-22992
agent/software-canonical-lookup
agent/software-canonical-lookup-request
vendor/western digital
canonical/western digital my cloud pr4100

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