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CVE Number Vulnerability Product Severity Date
CVE-2020-0852 Microsoft Word Remote Code Execution Vulnerability Microsoft Office Critical 11-03-2020

Technical Information

Brief overview of the risk:

A remote code execution vulnerability exists in Microsoft Word software when it fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could use a specially crafted file to perform actions in the security context of the current user. For example, the file could then take actions on behalf of the logged-on user with the same permissions as the current user.


Detailed Information on the risk:
To exploit the vulnerability, a user must open a specially crafted file with an affected version of Microsoft Word software. In an email attack scenario, an attacker could exploit the vulnerability by sending the specially crafted file to the user and convincing the user to open the file. In a web-based attack scenario, an attacker could host a website (or leverage a compromised website that accepts or hosts user-provided content) that contains a specially crafted file that is designed to exploit the vulnerability. However, an attacker would have no way to force the user to visit the website. Instead, an attacker would have to convince the user to click a link, typically by way of an enticement in an email or Instant Messenger message, and then convince the user to open the specially crafted file.
Note that Microsoft Outlook Preview Pane is an attack vector for this vulnerability.
The security update addresses the vulnerability by correcting how Microsoft Word handles files in memory.


Further information on this vulnerability is available at : CVE-2020-0852

Affected Software

Microsoft SharePoint Server 2019
Microsoft Office 2019 for 32-bit editions
Microsoft Office 2019 for 64-bit editions
Microsoft Office Online Server
Microsoft Office 2016 for Mac