{"cve":"CVE-2020-28971","nvd":{"published":"2020-12-01T16:15:11.003","modified":"2026-06-17T03:10:55.743","status":"Modified","description":"An issue was discovered on Western Digital My Cloud OS 5 devices before 5.06.115. A NAS Admin authentication bypass vulnerability could allow an unauthenticated user to execute privileged commands on the device via a cookie, because of insufficient validation of URI paths.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-287"],"references":["https://support.wdc.com/downloads.aspx?g=907&lang=en#downloads","https://www.westerndigital.com/support/productsecurity/wdc-20009-os5-firmware-5-06-115","https://www.zerodayinitiative.com/advisories/ZDI-20-1447/","https://support.wdc.com/downloads.aspx?g=907&lang=en#downloads","https://www.westerndigital.com/support/productsecurity/wdc-20009-os5-firmware-5-06-115"],"products":["westerndigital:my_cloud_os_5"],"source":"nvd","synced_at":"2026-10-19T21:11:20.317016139+00:00"},"epss":{"cve":"CVE-2020-28971","score":0.03831,"percentile":0.90094,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}