What’s Vulnerable › Vulnerabilities

CVE-2020-27158

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 7.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-10-27 · updated 2026-06-17
• Weakness: CWE-78

Description

Addressed remote code execution vulnerability in cgi_api.php that allowed escalation of privileges in Western Digital My Cloud NAS devices prior to 5.04.114.

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
• 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
• https://www.westerndigital.com/support/productsecurity/wdc-20007-my-cloud-firmware-version-5-04-114

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