CVE-2020-28940

critical

Description

On Western Digital My Cloud OS 5 devices before 5.06.115, the NAS Admin dashboard has an authentication bypass vulnerability that could allow an unauthenticated user to execute privileged commands on the device.

References

https://www.zerodayinitiative.com/advisories/ZDI-20-1445/

https://www.westerndigital.com/support/productsecurity/wdc-20009-os5-firmware-5-06-115

https://support.wdc.com/downloads.aspx?g=907&lang=en#downloads

Details

Source: Mitre, NVD

Published: 2020-12-01

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

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

Severity: Critical

EPSS

EPSS: 0.03621

Detections

Analytics