How severe is CVE-2020-27160?

CVE-2020-27160 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-27160 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-27160?

CVE-2020-27160 affects Westerndigital My Cloud Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-27160?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2020-27160 published?

CVE-2020-27160 was published on 2020-10-27 and last updated on 2026-06-17.

CVE-2020-27160

CVE-2020-27160 is a critical-severity vulnerability in Westerndigital My Cloud Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 5% (91st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Westerndigital My Cloud Firmware
Published: 2020-10-27
Last modified: 2026-06-17

Description

Addressed remote code execution vulnerability in AvailableApps.php that allowed escalation of privileges in Western Digital My Cloud NAS devices prior to 5.04.114 (issue 3 of 3).

Frequently asked questions

What is CVE-2020-27160?: Addressed remote code execution vulnerability in AvailableApps.php that allowed escalation of privileges in Western Digital My Cloud NAS devices prior to 5.04.114 (issue 3 of 3).
How severe is CVE-2020-27160?: CVE-2020-27160 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-27160 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-27160?: CVE-2020-27160 affects Westerndigital My Cloud Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-27160?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2020-27160 published?: CVE-2020-27160 was published on 2020-10-27 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:westerndigital:my_cloud_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Westerndigital My Cloud Firmware

CVE-2022-36331 — Critical (CVSS 10.0): Western Digital My Cloud, My Cloud Home, My Cloud Home Duo, and SanDisk ibi devices were vulnerable to an impersonation…
CVE-2022-22995 — Critical (CVSS 10.0): The combination of primitives offered by SMB and AFP in their default configuration allows the arbitrary writing of…
CVE-2020-27744 — Critical (CVSS 9.8): An issue was discovered on Western Digital My Cloud NAS devices before 5.04.114. They allow remote code execution with…
CVE-2020-27159 — Critical (CVSS 9.8): Addressed remote code execution vulnerability in DsdkProxy.php due to insufficient sanitization and insufficient…
CVE-2020-27158 — Critical (CVSS 9.8): Addressed remote code execution vulnerability in cgi_api.php that allowed escalation of privileges in Western Digital…
CVE-2020-25765 — Critical (CVSS 9.8): Addressed remote code execution vulnerability in reg_device.php due to insufficient validation of user input.in Western…

All CVEs affecting Westerndigital My Cloud Firmware →

Other CWE-22 (Path Traversal) vulnerabilities

CVE-2026-48282 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Limitation of a Pathname to a Restricted…
CVE-2026-54917 — Critical (CVSS 10.0): SeaweedFS is a distributed storage system for object storage (S3), file systems, and Iceberg tables. Prior to 4.30, the…
CVE-2026-11429 — Critical (CVSS 10.0): Two endpoints in the Vault Service ScriptsController, shared by Altium Enterprise Server and Altium 365, accept file…
CVE-2026-34909 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit a Path Traversal vulnerability found in UniFi OS devices to…
CVE-2026-7411 — Critical (CVSS 10.0): In Eclipse BaSyx Java Server SDK versions prior to 2.0.0-milestone-10, inadequate path normalization in the Submodel…
CVE-2026-36767 — Critical (CVSS 10.0): A path traversal vulnerability in the /content/images/add endpoint of shopizer v3.2.5 allows attackers write arbitrary…

Browse all CWE-22 (Path Traversal) vulnerabilities →