cmdtool in OpenWindows 3.0 and XView 3.0 in SunOS 4.1.4 and earlier allows attackers with physical access to the system to display unechoed characters (such as those from password prompts) via the L2/AGAIN key.

pcnfsd (aka rpc.pcnfsd) allows local users to change file permissions, or execute arbitrary commands through arguments in the RPC call.

The permissions for the /dev/audio device on Solaris 2.2 and earlier, and SunOS 4.1.x, allow any local user to read from the device, which could be used by an attacker to monitor conversations happening near a machine that has a microphone.