addnetpr in SGI IRIX 6.2 and earlier allows local users to modify arbitrary files and possibly gain root access via a symlink attack on a temporary file.
netprint in SGI IRIX 6.4 and earlier trusts the PATH environmental variable for finding and executing the disable program, which allows local users to gain privileges.
Indigo Magic System Tour in the SGI system tour package (systour) for IRIX 5.x through 6.3 allows local users to gain root privileges via a Trojan horse .exitops program, which is called by the inst command that is executed by the RemoveSystemTour program.