CVE-2020-20277: Troglobit Uftpd

Critical severity, CVSS 9.8. EPSS: 26.2% chance of exploitation in the next 30 days.

There are multiple unauthenticated directory traversal vulnerabilities in different FTP commands in uftpd FTP server versions 2.7 to 2.10 due to improper implementation of a chroot jail in common.c's compose_abspath function that can be abused to read or write to arbitrary files on the filesystem, leak process memory, or potentially lead to remote code execution.

Affected products

• Troglobit Uftpd: from 2.7, up to and including 2.10

Published 2020-12-18. Last modified 2026-06-17.