CVE-2019-5021
CVSS v3
9.8
CRITICAL
EPSS Score
6.3 %
exploit probability, as of 2026-10-18
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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Affected and fixed versions
Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2019-5021 yet.
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.
Technical details
- Published
- 2019-05-08
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