What is the severity of ZDI-CAN-15856?

ZDI-CAN-15856 is classified as a critical severity vulnerability due to its potential for arbitrary code execution.

How do I fix ZDI-CAN-15856?

To fix ZDI-CAN-15856, update the Western Digital MyCloud PR4100 to the latest firmware version provided by the manufacturer.

Who is affected by ZDI-CAN-15856?

ZDI-CAN-15856 affects installations of Western Digital MyCloud PR4100 devices.

Is authentication required to exploit ZDI-CAN-15856?

No, authentication is not required to exploit the ZDI-CAN-15856 vulnerability.

What type of attackers can exploit ZDI-CAN-15856?

Network-adjacent attackers can exploit ZDI-CAN-15856 to execute arbitrary code.

Vulnerability/
ZDI-CAN-15856

high

8.8

30/1/2025

ZDI-CAN-15856: (Pwn2Own) Western Digital MyCloud PR4100 ConnectivityService Command Injection Remote Code Execution Vulnerability

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Western Digital MyCloud PR4100. Authentication is not required to exploit this vulnerability. The specific flaw exists within the ConnectivityService service. 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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Frequently Asked Questions

What is the severity of ZDI-CAN-15856?
ZDI-CAN-15856 is classified as a critical severity vulnerability due to its potential for arbitrary code execution.
How do I fix ZDI-CAN-15856?
To fix ZDI-CAN-15856, update the Western Digital MyCloud PR4100 to the latest firmware version provided by the manufacturer.
Who is affected by ZDI-CAN-15856?
ZDI-CAN-15856 affects installations of Western Digital MyCloud PR4100 devices.
Is authentication required to exploit ZDI-CAN-15856?
No, authentication is not required to exploit the ZDI-CAN-15856 vulnerability.
What type of attackers can exploit ZDI-CAN-15856?
Network-adjacent attackers can exploit ZDI-CAN-15856 to execute arbitrary code.

agent/references
agent/softwarecombine
agent/severity
agent/title
agent/type
agent/description
agent/event
agent/source
agent/tags
collector/zdi-advisory
source/ZDI
alias/ZDI-22-077
alias/ZDI-CAN-15856
alias/CVE-2022-22991
agent/software-canonical-lookup
agent/software-canonical-lookup-request
vendor/western digital
canonical/western digital my cloud pr4100

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Frequently Asked Questions

What is the severity of ZDI-CAN-15856?
ZDI-CAN-15856 is classified as a critical severity vulnerability due to its potential for arbitrary code execution.
How do I fix ZDI-CAN-15856?
To fix ZDI-CAN-15856, update the Western Digital MyCloud PR4100 to the latest firmware version provided by the manufacturer.
Who is affected by ZDI-CAN-15856?
ZDI-CAN-15856 affects installations of Western Digital MyCloud PR4100 devices.
Is authentication required to exploit ZDI-CAN-15856?
No, authentication is not required to exploit the ZDI-CAN-15856 vulnerability.
What type of attackers can exploit ZDI-CAN-15856?
Network-adjacent attackers can exploit ZDI-CAN-15856 to execute arbitrary code.