Addressed remote code execution vulnerability in cgi_api.php that allowed escalation of…
Priority MEDIUM 52CWE-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
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.
Why it matters now
EPSS 0.07498 94th 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_ex4100:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Westerndigital |
| cpe:2.3:h:westerndigital:my_cloud_expert_series_ex2:-:*:*:*:*:*:*:* | 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_firmware:*:*:*:*:*:*:*:* Versions before 5.04.114 Vulnerable ·Westerndigital
- cpe:2.3:h:westerndigital:my_cloud_ex4100:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Westerndigital
- cpe:2.3:h:westerndigital:my_cloud_expert_series_ex2:-:*:*:*:*:*:*:* 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-2020-27158
- 2026-10-03 Alias added: GHSA-r4mg-wwf5-4w87
References
More Westerndigital My Cloud Firmware vulnerabilities
- TI-2020-16829 An issue was discovered on Western Digital My Cloud NAS devices before 5.04.114. 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-2020-27158 · CVE Program
- CVE-2020-27158 · NVD
- FIRST EPSS
- GHSA-r4mg-wwf5-4w87 · 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