Microsoft Security Advisory (935423) Vulnerability in Windows Animated Cursor Handling

Microsoft is investigating new public reports of targeted attacks exploiting a vulnerability in the way Microsoft Windows handles animated cursor (.ani) files. In order for this attack to be carried out, a user must either visit a Web site that contains a Web page that is used to exploit the vulnerability or view a specially […]

Microsoft is investigating new public reports of targeted attacks exploiting a vulnerability in the way Microsoft Windows handles animated cursor (.ani) files. In order for this attack to be carried out, a user must either visit a Web site that contains a Web page that is used to exploit the vulnerability or view a specially crafted e-mail message or email attachment sent to them by an attacker.

As a best practice, users should always exercise extreme caution when opening or viewing unsolicited emails and email attachments from both known and unknown sources.Microsoft has added detection to the Windows Live OneCare safety scanner for up-to-date removal of malicious software that attempts to exploit this vulnerability.Microsoft intends to actively share information with Microsoft Security Response Alliance partners so that their detection can be up to date to detect and remove attacks.Customers in the U.S. and Canada who believe they are affected can receive technical support from Microsoft Product Support Services at 1-866-PCSAFETY. There is no charge for support calls that are associated with security updates.International customers can receive support from their local Microsoft subsidiaries. There is no charge for support that is associated with security updates. For more information about how to contact Microsoft for support issues, visit the International Support Web site.

Upon completion of this investigation, Microsoft will take the appropriate action to help protect our customers. This will include providing a security update through our monthly release process or providing an out-of-cycle security update, depending on customer needs.

Microsoft is actively monitoring this situation to keep customers informed and to provide customer guidance as necessary.

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