Multiple stack-based buffer overflows in (a) acon.c, (b) menu.c, and (c) child.c in Acon 1.0.5-5 through 1.0.5-7 allow local users to execute arbitrary code via (1) a long HOME environment variable or (2) a large number of terminal columns.
https://exchange.xforce.ibmcloud.com/vulnerabilities/41915
http://www.securityfocus.com/bid/28862
http://secunia.com/advisories/29909