Microsoft fixes WMF vulnerability in Vista OS builds

Microsoft fixes WMF vulnerability in Vista OS builds

It is interesting to know that even the test releases of Microsoft’s Vista operating system were suffering from the same WMF rendering vulnerability, which affects the regularly available OS from the company. The software company has now issued a patch for a preliminary version of its Vista operating system for this bug.

The patches issued by Microsoft apply to a Community Technology Preview of Vista released last month. This release was made available to a limited group of testers under the Microsoft Developer Network Universal and Beta Testing program. Microsoft is scheduled to release the publicly release Vista sometime later this year.

This fix updates the way Vista renders the WMF files preventing it from getting infected by corrupt WMF files. If the OS is left unpatched, opening up specially crafted WMF image files can render a machine vulnerable to security issues. It could trigger the execution of code, which can be programmed to download even more dangerous code from the internet.

This vulnerability was discovered last month and was critical enough to get Microsoft to release an early patch rather than waiting for the Patch Tuesday.

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