HIGH

CVE-2020-5221

CVSS v3

7.2

HIGH

EPSS Score

1.2 %

exploit probability, as of 2026-10-19

CISA KEV

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-2020-5221 yet.

Full record on NVD

Description

In uftpd before 2.11, it is possible for an unauthenticated user to perform a directory traversal attack using multiple different FTP commands and read and write to arbitrary locations on the filesystem due to the lack of a well-written chroot jail in compose_abspath(). This has been fixed in version 2.11

Technical details

Published: 2020-01-22

Frequently asked questions

What is CVE-2020-5221?

Is CVE-2020-5221 actively exploited?

Active exploitation of CVE-2020-5221 has not been confirmed. Its EPSS score was 1.2% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-5221?

CVE-2020-5221 has a CVSS v3 base score of 7.2 (HIGH severity).

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