Critical - Bulletin Identifier: Microsoft Security Bulletin MS05-054Bulletin Title: Cumulative Security Update for Internet Explorer (905915)Executive Summary: Vulnerabilities exist in Internet Explorer, the most severe of these could allow an attacker to take complete control of an affected system.Maximum Severity Rating: CriticalImpact of Vulnerability: Remote Code ExecutionAffected Software: Windows, Internet Explorer. For more information, see the Affected Software and Download Locations section.Important:Bulletin Identifier: Microsoft Security Bulletin MS05-055Bulletin Title: Vulnerability in Windows Kernel Could Allow Elevation of Privilege (908523)Executive Summary: A vulnerability exists in the Windows Kernel that could allow elevation of privileges on an affected system. An attacker must have valid logon credentials and be able to log on locally to exploit this vulnerability.Maximum Severity Rating: ImportantImpact of Vulnerability: Elevation of PrivilegeAffected Software: Windows. For more information, see the Affected Software and Download Locations section.