source: http://www.securityfocus.com/bid/10542/info

A local denial of service vulnerability is reported to affect the Sygate Personal Firewall. It is reported that the smc.exe service may be crashed using the List-View Control in the Sygate Personal Firewall GUI.

This issue may be exploited in conjunction with the issue described in BID 10540, in order to completely disable the affected firewall as an unprivileged user. 

This vulnerability is reported to affect Sygate Personal Firewall PRO version 5.5 Build 2525. Other versions might also be affected.

SendMessage(hHdrControl, HDM_GETITEMRECT, 1, (LPARAM)NON-WRITABLE_ADDR);