CVE-2020-27744

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 6.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2020-10-29 · updated 2026-06-17
Weakness: CWE-78

Description

An issue was discovered on Western Digital My Cloud NAS devices before 5.04.114. They allow remote code execution with resultant escalation of privileges.

Affected products

Westerndigital My Cloud Firmware: before 5.04.114 — fixed in 5.04.114

How to fix

Upgrade to a fixed version: Westerndigital My Cloud Firmware 5.04.114. Check the vendor advisory for mitigations.

References

https://www.comparitech.com/blog/information-security/security-vulnerabilities-80000-devices-update-now/
https://www.westerndigital.com/support/productsecurity/wdc-20007-my-cloud-firmware-version-5-04-114
https://www.comparitech.com/blog/information-security/security-vulnerabilities-80000-devices-update-now/
https://www.westerndigital.com/support/productsecurity/wdc-20007-my-cloud-firmware-version-5-04-114

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