The Gmax Mail client in Hitachi Groupmax before 20060426 allows remote attackers to cause a denial of service (application hang or erroneous behavior) via an attachment with an MS-DOS device filename.
https://exchange.xforce.ibmcloud.com/vulnerabilities/26099
http://www.vupen.com/english/advisories/2006/1539
http://www.hitachi-support.com/security_e/vuls_e/HS06-006_e/index-e.html
http://www.hitachi-support.com/security_e/vuls_e/HS06-006_e/01-e.html