htop 0.7 writes process names to a terminal without sanitizing non-printable characters, which might allow local users to hide processes, modify arbitrary files, or have unspecified other impact via a process name with "crazy control strings."
https://exchange.xforce.ibmcloud.com/vulnerabilities/46321
http://www.securityfocus.com/bid/32081
http://www.openwall.com/lists/oss-security/2008/11/14/3
http://www.openwall.com/lists/oss-security/2008/11/02/1
http://lists.opensuse.org/opensuse-security-announce/2008-11/msg00002.html