An issue was discovered on Western Digital My Cloud NAS devices before 5.04.114.
Priority MEDIUM 51CWE-78Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-78.
Summary
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.
Why it matters now
EPSS 0.0616 93rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:westerndigital:my_cloud_firmware:*:*:*:*:*:*:*:* | before 5.04.114 | Vulnerable | Westerndigital |
| cpe:2.3:h:westerndigital:my_cloud_ex2_ultra:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Westerndigital |
| cpe:2.3:h:westerndigital:my_cloud_ex4100:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Westerndigital |
| cpe:2.3:h:westerndigital:my_cloud_mirror_gen2:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Westerndigital |
| cpe:2.3:h:westerndigital:my_cloud_pr2100:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Westerndigital |
| cpe:2.3:h:westerndigital:my_cloud_pr4100:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Westerndigital |
- cpe:2.3:o:westerndigital:my_cloud_firmware:*:*:*:*:*:*:*:* Versions before 5.04.114 Vulnerable ·Westerndigital
- cpe:2.3:h:westerndigital:my_cloud_ex2_ultra:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Westerndigital
- cpe:2.3:h:westerndigital:my_cloud_ex4100:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Westerndigital
- cpe:2.3:h:westerndigital:my_cloud_mirror_gen2:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Westerndigital
- cpe:2.3:h:westerndigital:my_cloud_pr2100:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Westerndigital
- cpe:2.3:h:westerndigital:my_cloud_pr4100:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Westerndigital
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-27744
- 2026-10-03 Alias added: GHSA-93pj-hgf7-xp6r
References
More Westerndigital My Cloud Firmware vulnerabilities
- TI-2020-16509 Addressed remote code execution vulnerability in cgi_api.php that allowed escalation of… CVSS 3.1CRITICAL 9.8
- TI-2020-16510 Addressed remote code execution vulnerability in DsdkProxy.php due to insufficient… CVSS 3.1CRITICAL 9.8
- TI-2020-15773 Addressed remote code execution vulnerability in reg_device.php due to insufficient… CVSS 3.1CRITICAL 9.8
- TI-2022-16678 Impersonation attack causing an Authentication Bypass on Western Digital devices CVSS 3.1CRITICAL 10.0
- TI-2020-16511 Addressed remote code execution vulnerability in AvailableApps.php that allowed… CVSS 3.1CRITICAL 9.8
- TI-2022-07170 Western Digital My Cloud OS 5 and My Cloud Home Unauthenticated Arbitrary File Write Vulnerability in Netatalk CVSS 3.1CRITICAL 10.0
Sources
- CVE-2020-27744 · CVE Program
- CVE-2020-27744 · NVD
- FIRST EPSS
- GHSA-93pj-hgf7-xp6r · GitHub Advisory Database · CC BY 4.0
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