{"cve":"CVE-2019-5021","nvd":{"published":"2019-05-08T17:29:01.490","modified":"2026-06-17T02:37:00.007","status":"Modified","description":"Versions of the Official Alpine Linux Docker images (since v3.3) contain a NULL password for the `root` user. This vulnerability appears to be the result of a regression introduced in December of 2015. Due to the nature of this issue, systems deployed using affected versions of the Alpine Linux container which utilize Linux PAM, or some other mechanism which uses the system shadow file as an authentication database, may accept a NULL password for the `root` user.","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-258"],"references":["http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00004.html","http://www.securityfocus.com/bid/108288","https://alpinelinux.org/posts/Docker-image-vulnerability-CVE-2019-5021.html","https://security.netapp.com/advisory/ntap-20190510-0001/","https://support.f5.com/csp/article/K25551452"],"products":["f5:big-ip_controller","gliderlabs:docker-alpine","opensuse:leap"],"source":"nvd","synced_at":"2026-10-19T20:56:19.218283075+00:00"},"epss":{"cve":"CVE-2019-5021","score":0.06263,"percentile":0.93569,"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."]}