eEye Digital Security has discovered a second heap overflow vulnerability in the MS06-042 cumulative Internet Explorer update that would allow an attacker to execute arbitrary code on the system of a victim who attempts to access a malicious URL. Windows 2000, Windows XP SP1, and Windows 2003 SP0 systems running Internet Explorer 5 SP4 or Internet Explorer 6 SP1, with the MS06-042 patch applied, are vulnerable; unpatched and more recent versions of Internet Explorer are not affected.
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