CVE-2020-20276
CVE-2020-20276 is a critical-severity vulnerability in Troglobit Uftpd with a CVSS 3.x base score of 9.8. 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-787.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 7.5
- EPSS exploit prediction: 3% (87th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-787
- Affected product: Troglobit Uftpd
- Published:
- Last modified:
Description
An unauthenticated stack-based buffer overflow vulnerability in common.c's handle_PORT in uftpd FTP server versions 2.10 and earlier can be abused to cause a crash and could potentially lead to remote code execution.
Frequently asked questions
- What is CVE-2020-20276?
- An unauthenticated stack-based buffer overflow vulnerability in common.c's handle_PORT in uftpd FTP server versions 2.10 and earlier can be abused to cause a crash and could potentially lead to remote code execution.
- How severe is CVE-2020-20276?
- CVE-2020-20276 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2020-20276 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-20276?
- CVE-2020-20276 affects Troglobit Uftpd. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-20276?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2020-20276 published?
- CVE-2020-20276 was published on 2020-12-18 and last updated on 2026-06-17.
References
- https://arinerron.com/blog/posts/6
- https://github.com/troglobit/uftpd/commit/0fb2c031ce0ace07cc19cd2cb2143c4b5a63c9dd
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-2020-14149 — 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-2020-5221 — Medium (CVSS 6.5): In uftpd before 2.11, it is possible for an unauthenticated user to perform a directory traversal attack using multiple…
- 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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