CVE-2021-35941

Name: CVE-2021-35941
Creator: NVD / NIST
Published: 2021-06-29T21:15:07.88+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 12.71%

Last modified Jun 17, 2026

CVE-2021-35941 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Western Digital WD My Book Live (2.x and later) and WD My Book Live Duo (all versions) have an administrator API that can perform a system factory restore without authentication, as exploited in the wild in June 2021, a different vulnerability than CVE-2018-18472.. EPSS estimates a 12.71% chance of exploitation in the next 30 days.

Description

Western Digital WD My Book Live (2.x and later) and WD My Book Live Duo (all versions) have an administrator API that can perform a system factory restore without authentication, as exploited in the wild in June 2021, a different vulnerability than CVE-2018-18472.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

12.71%

95.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-306

Affected Software

Vendor	Product	Versions
Westerndigital	Wd My Book Live Firmware	>= 2.0
Westerndigital	Wd My Book Live Duo Firmware	All versions

References

https://arstechnica.com/gadgets/2021/06/hackers-exploited-0-day-not-2018-bug-to-mass-wipe-my-book-live-devices/Exploit, Third Party Advisory
https://www.westerndigital.com/support/productsecurity/wdc-21008-recommended-security-measures-wd-mybooklive-wd-mybookliveduoVendor Advisory
https://arstechnica.com/gadgets/2021/06/hackers-exploited-0-day-not-2018-bug-to-mass-wipe-my-book-live-devices/Exploit, Third Party Advisory
https://www.westerndigital.com/support/productsecurity/wdc-21008-recommended-security-measures-wd-mybooklive-wd-mybookliveduoVendor Advisory

Timeline

Published: Jun 29, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-35941?

How severe is CVE-2021-35941?

CVE-2021-35941 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 12.71% probability of exploitation in the next 30 days.

How do I fix CVE-2021-35941?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-35941?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST