SynopsisThe Microsoft Office Online Server installation on the remote host is missing a security update.
DescriptionThe Microsoft Office Online Server installation on the remote host is missing a security update. It is, therefore, affected by a remote code execution vulnerability in Microsoft Excel software when the software fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user. If the current user is logged on with administrative user rights, an attacker could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.
SolutionUpgrade to the latest version of Office Online Server and apply the KB4475595 patch to address this issue.