CVE-2026-27857

A flaw was found in dovecot. An unauthenticated and remote attacker can send a specially crafted "NOOP" command containing numerous open and close parentheses without a command-ending line feed, causing the server to allocate an excessive amount of memory, resulting in a denial of service...

Command injection

FileCopa FTP Server 5.01 allows remote attackers to cause a denial of service server hang via a large number of crafted NOOP commands...

CVE-2009-3662

FileCopa FTP Server 5.01 allows remote attackers to cause a denial of service server hang via a large number of crafted NOOP commands...