We have another Windows Search zero-day vulnerability being reported that can be used to automatically open a search window containing remote executables, simply by launching a Word document. Hackers can use the Microsoft Office OLEObject flaw with the search-ms protocol handler to open a remote search window simply by opening a Word document.
Hackers were exploiting the new Windows zero-day vulnerability in the Microsoft Windows Support Diagnostic Tool (MSDT). To exploit it, they created a malicious Word document that launched the ms-msdt URI protocol handler to execute PowerShell commands simply by opening the document.
These flaws makes it possible to modify Microsoft Office documents, by skipping over the Protected View and launching URI protocol handlers without interaction by users. Below are some of the latest patching related articles that help explain why keeping Windows patched up is critical to keeping users safe from harm.
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