Improper access control in WD My Book Live and WD My Book Live Duo

Published: 2021-06-30
Risk High
Patch available NO
Number of vulnerabilities 1
CVE ID CVE-2021-35941
Exploitation vector Network
Public exploit This vulnerability is being exploited in the wild.
Vulnerable software
WD My Book Live
Hardware solutions / Office equipment, IP-phones, print servers

WD My Book Live Duo
Hardware solutions / Office equipment, IP-phones, print servers

Vendor Western Digital

Security Advisory

This security advisory describes one high risk vulnerability.

1) Improper access control

Risk: High

CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:H/RL:U/RC:C] [PCI]

CVE-ID: CVE-2021-35941

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No


The vulnerability allows a remote attacker to delete all data on the system.

The vulnerability exists due to improper access restrictions to the administrator API. A remote non-authenticated attacker can send a specially crafted HTTP request to the exposed API and perform a system factory restore, deleting all data on the NAS device.

Note, the vulnerability is being actively exploited in the wild along with vulnerability #VU15460.


Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

WD My Book Live: All versions

WD My Book Live Duo: All versions

CPE External links

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.