Buffer overflow in mIRC 6.0.2 and earlier allows remote attackers to execute arbitrary code via a long $asctime value.
https://exchange.xforce.ibmcloud.com/vulnerabilities/9970
http://www.securityfocus.com/bid/5576
http://www.mirc.co.uk/whatsnew.txt
http://marc.info/?l=ntbugtraq&m=103046138631893&w=2
http://marc.info/?l=bugtraq&m=103046375002380&w=2
http://archives.neohapsis.com/archives/vulnwatch/2002-q3/0092.html