CVE-2020-27159

Name: CVE-2020-27159
Creator: NVD / NIST
Published: 2020-10-27T20:15:22.11+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 5.95%

Last modified Jun 17, 2026

CVE-2020-27159 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Addressed remote code execution vulnerability in DsdkProxy.php due to insufficient sanitization and insufficient validation of user input in Western Digital My Cloud NAS devices prior to 5.04.114. EPSS estimates a 5.95% chance of exploitation in the next 30 days.

Description

Addressed remote code execution vulnerability in DsdkProxy.php due to insufficient sanitization and insufficient validation of user input in Western Digital My Cloud NAS devices prior to 5.04.114

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

5.95%

92.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-78

Affected Software

Vendor	Product	Versions
Westerndigital	My Cloud Firmware	< 5.04.114

References

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

Timeline

Published: Oct 27, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-27159?

Addressed remote code execution vulnerability in DsdkProxy.php due to insufficient sanitization and insufficient validation of user input in Western Digital My Cloud NAS devices prior to 5.04.114

How severe is CVE-2020-27159?

CVE-2020-27159 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 5.95% probability of exploitation in the next 30 days.

How do I fix CVE-2020-27159?

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-2020-27159?

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

Scan your code now

Source: NVD / NIST