CVE-2020-27158
Addressed remote code execution vulnerability in cgi_api.php that allowed escalation of...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2020-27158- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 10.0 High
AV:N/AC:L/Au:N/C:C/I:C/A:C - Weakness
- CWE-78
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2020-27158- Updated
- 2026-11-02
EUVDEUVD-2020-19682 No score
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.
- Record
EUVD-2020-19682- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-r4mg-wwf5-4w87 No score
Addressed remote code execution vulnerability in cgi_api.php that allowed escalation of...
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.
- Record
GHSA-r4mg-wwf5-4w87- Weakness
- CWE-78, CWE-269
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-27158 is a critical vulnerability (CVSS 9.8) in Westerndigital My Cloud Firmware, published October 27, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 7.50%, the 94th percentile. No source names a fixed version.
References
westerndigital.com/support/productsecurity
comparitech.com/blog/information-security/security-vulnerabilities-80000-devices-update-now
nvd.nist.gov/vuln/detail/CVE-2020-27158
github.com/advisories/GHSA-r4mg-wwf5-4w87