CVE-2023-51713: ProFTPD

High severity, CVSS 7.5. EPSS: 4.2% chance of exploitation in the next 30 days.

make_ftp_cmd in main.c in ProFTPD before 1.3.8a has a one-byte out-of-bounds read, and daemon crash, because of mishandling of quote/backslash semantics.

Affected products

• ProFTPD ProFTPD: before 1.3.8a (fixed in 1.3.8a)

Published 2023-12-22. Last modified 2026-06-17.