QNX Neutrino RTOS 6.3.0 ships /etc/rc.d/rc.local with world-writable permissions, which allows local users to modify the file and execute arbitrary code at system startup.
https://exchange.xforce.ibmcloud.com/vulnerabilities/24552
http://www.vupen.com/english/advisories/2006/0474
http://www.securityfocus.com/bid/16539
http://www.idefense.com/intelligence/vulnerabilities/display.php?id=387