Unspecified vulnerability in guestex.pl in Teca Scripts Guestex 1.0 allows remote attackers to execute arbitrary shell commands via the email parameter, possibly involving shell metacharacters.
https://exchange.xforce.ibmcloud.com/vulnerabilities/24645
http://www.vupen.com/english/advisories/2006/0640
http://www.securityfocus.com/bid/16711
http://www.securityfocus.com/archive/1/425970/100/0/threaded
http://www.evuln.com/vulns/76/summary.html