Expreserve, as used in vi and ex, allows local users to overwrite arbitrary files and gain root access.

Buffer overflow and denial of service in Sendmail 8.7.5 and earlier through GECOS field gives root access to local users.

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

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

Oversized ICMP ping packets can result in a denial of service, aka Ping o' Death.

swinstall and swmodify commands in SD-UX package in HP-UX systems allow local users to create or overwrite arbitrary files to gain root access.

SGI IRIX buffer overflow in xterm and Xaw allows root access.

Buffer overflow in SGI IRIX mailx program.

Vulnerabilities in UMN gopher and gopher+ versions 1.12 and 2.0x allow an intruder to read any files that can be accessed by the gopher daemon.

Race condition in Linux mailx command allows local users to read user files.

Buffer overflow in AIX lchangelv gives root access.

Buffer overflow in dtaction command gives root access.

Sun/Solaris utmp file allows local users to gain root access if it is writable by users other than root.

Windows NT 4.0 beta allows users to read and delete shares.

AIX infod allows local users to gain root access through an X display.

AIX passwd allows local users to gain root access.

Denial of service when an attacker sends many SYN packets to create multiple connections without ever sending an ACK to complete the connection, aka SYN flood.

AIX bugfiler program allows local users to gain root access.

Local users can execute commands as other users, and read other users' files, through the filter command in the Elm elm-2.4 mail package using a symlink attack.

Some implementations of rlogin allow root access if given a -froot parameter.