WinCOM LPD 1.00.90 allows remote attackers to cause a denial of service via a large number of LPD options to the LPD port (515).
https://exchange.xforce.ibmcloud.com/vulnerabilities/5258
http://www.securityfocus.com/bid/1701
http://archives.neohapsis.com/archives/bugtraq/2000-09/0212.html