Buffer overflow in login in various System V based operating systems allows remote attackers to execute arbitrary commands via a large number of arguments through services such as telnet and rlogin.

The prescan() function in the address parser (parseaddr.c) in Sendmail before 8.12.9 does not properly handle certain conversions from char and int types, which can cause a length check to be disabled when Sendmail misinterprets an input value as a special "NOCHAR" control value, allowing attackers to cause a denial of service and possibly execute arbitrary code via a buffer overflow attack using messages, a different vulnerability than CVE-2002-1337.

Buffer overflow of rlogin program using TERM environmental variable.

The AIX FTP client can be forced to execute commands from a malicious server through shell metacharacters (e.g. a pipe character).

Buffer overflow in xlock program allows local users to execute commands as root.

Local user gains root privileges via buffer overflow in rdist, via expstr() function.

Vacation program allows command execution by remote users through a sendmail command.

HP-UX aserver program allows local users to gain privileges via a symlink attack.

Buffer overflow in Xt library of X Windowing System allows local users to execute commands with root privileges.

Local users can start Sendmail in daemon mode and gain root privileges.

Land IP denial of service.

Sendmail allows local users to write to a file and gain group permissions via a .forward or :include: file.