CVE-2020-5221
CVE-2020-5221 is a medium-severity vulnerability in Troglobit Uftpd with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- CVSS v2: 6.4
- EPSS exploit prediction: 1% (63rd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-22
- Affected product: Troglobit Uftpd
- Published:
- Last modified:
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
Frequently asked questions
- What is CVE-2020-5221?
- 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
- How severe is CVE-2020-5221?
- CVE-2020-5221 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.
- Is CVE-2020-5221 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-5221?
- CVE-2020-5221 affects Troglobit Uftpd. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-5221?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2020-5221 published?
- CVE-2020-5221 was published on 2020-01-22 and last updated on 2026-06-17.
References
- https://github.com/troglobit/uftpd/commit/455b47d3756aed162d2d0ef7f40b549f3b5b30fe
- https://github.com/troglobit/uftpd/security/advisories/GHSA-wmx8-v7mx-6x9h
Affected products (1)
- cpe:2.3:a:troglobit:uftpd:*:*:*:*:*:*:*:*
More vulnerabilities in Troglobit Uftpd
- CVE-2020-20277 — Critical (CVSS 9.8): There are multiple unauthenticated directory traversal vulnerabilities in different FTP commands in uftpd FTP server…
- CVE-2020-20276 — Critical (CVSS 9.8): An unauthenticated stack-based buffer overflow vulnerability in common.c's handle_PORT in uftpd FTP server versions…
- CVE-2020-14149 — High (CVSS 7.5): In uftpd before 2.12, handle_CWD in ftpcmd.c mishandled the path provided by the user, causing a NULL pointer…
- CVE-2020-5204 — Medium (CVSS 6.5): In uftpd before 2.11, there is a buffer overflow vulnerability in handle_PORT in ftpcmd.c that is caused by a buffer…
All CVEs affecting Troglobit Uftpd →
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