On Western Digital My Cloud OS 5 devices before 5.06.115, the NAS Admin dashboard has an…
Priority MEDIUM 49CWE-287Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- 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-287.
Summary
On Western Digital My Cloud OS 5 devices before 5.06.115, the NAS Admin dashboard has an authentication bypass vulnerability that could allow an unauthenticated user to execute privileged commands on the device.
Why it matters now
EPSS 0.03944 90th percentileScored 2026-11-07
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_os_5:*:*:*:*:*:*:*:* | before 5.06.115 | 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_gen_2:-:*:*:*:*:*:*:* | 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_os_5:*:*:*:*:*:*:*:* Versions before 5.06.115 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_gen_2:-:*:*:*:*:*:*:* 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-2020-28940
- 2026-10-03 Alias added: GHSA-wrfx-v3mv-pvww
References
More Westerndigital My Cloud Os 5 vulnerabilities
- TI-2020-17494 An issue was discovered on Western Digital My Cloud OS 5 devices before 5.06.115. CVSS 3.1CRITICAL 9.8
- TI-2020-17493 An issue was discovered on Western Digital My Cloud OS 5 devices before 5.06.115. CVSS 3.1CRITICAL 9.8
- TI-2020-17752 An issue was discovered on Western Digital My Cloud OS 5 devices before 5.07.118. CVSS 3.1CRITICAL 9.8
- TI-2022-16674 Path traversal vulnerability leading to an arbitrary file write in Western Digital devices CVSS 3.1CRITICAL 9.8
- TI-2022-16675 Path Traversal Vulnerability leading to an arbitrary file read in Western Digital devices CVSS 3.1MEDIUM 5.8
- TI-2022-16673 Resource Exhaustion Vulnerability in Western Digital devices CVSS 3.1MEDIUM 4.9
Sources
- CVE-2020-28940 · CVE Program
- CVE-2020-28940 · NVD
- FIRST EPSS
- GHSA-wrfx-v3mv-pvww · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences