Windows Virus Threat
On Tuesday, December 27, 2005, Microsoft became aware of public reports of malicious attacks on some customers involving a previously unknown security vulnerability in the Windows Meta File (WMF) code area in the Windows platform.
Every Windows system shipped since 1990 contains the flaw. Computers can become infected simply by viewing an infected image. It affects the following file formats: WMF, .BMP, .DIB, .GIF, .EMF, .JFIF, .JPE, .JPEG, .JPG, .PNG, .TIF, and .TIFF. An official patch is not expected to be released until January 10th.
Microsoft Security Advisory (912840)
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