Microsoft issues multi-patch update for all versions of Office on Windows, Office XP, 2007 and 2010. Microsoft did not deliver patches for the vulnerabilities in Office for Mac 2004 and Mac 2008. Microsoft has delayed security updates for the Mac version of Office before. In May 2009, Microsoft delayed fixes for the same flaws in its Mac software until the following month. Attackers can hijack computers simply by getting them to view a specially-crafted message in Outlook preview pane in the Outlook preview window.”]
Source: https://www.csoonline.com/article/2126068/ms-explains-missing-mac-office-patches.html