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Multiple vulnerabilities were found in Microsoft Office. Malicious users can exploit these vulnerabilities to gain privileges, execute arbitrary code, spoof user interface.

Below is a complete list of vulnerabilities:

1. A remote code execution vulnerability in Microsoft Office Access Connectivity Engine can be exploited remotely via specially crafted file to gain privileges.
2. A remote code execution vulnerability in Microsoft Office Access Connectivity Engine can be exploited remotely via specially crafted file to execute arbitrary code.
3. A cross-site-scripting (XSS) vulnerability Microsoft Office SharePoint can be exploited remotely via specially crafted web to spoof user interface.
4. A remote code execution vulnerability in Microsoft Graphics Components can be exploited remotely via specially crafted file to execute arbitrary code.
5. A remote code execution vulnerability in Microsoft Excel can be exploited remotely via specially crafted file to execute arbitrary code.
6. A remote code execution vulnerability in Office can be exploited remotely via specially crafted to execute arbitrary code.

Microsoft Office 2019 for 32-bit editions
Microsoft Office 2016 (32-bit edition)
Microsoft Office 2010 Service Pack 2 (64-bit editions)
Office 365 ProPlus for 64-bit Systems
Microsoft Office 2016 (64-bit edition)
Microsoft Office 2013 Service Pack 1 (32-bit editions)
Microsoft Office 2019 for 64-bit editions
Microsoft Office 2010 Service Pack 2 (32-bit editions)
Microsoft Office 2013 RT Service Pack 1
Microsoft Office 2013 Service Pack 1 (64-bit editions)
Office 365 ProPlus for 32-bit Systems
Microsoft SharePoint Enterprise Server 2016
Microsoft SharePoint Server 2019
Microsoft SharePoint Foundation 2010 Service Pack 2
Microsoft SharePoint Enterprise Server 2013 Service Pack 1
Microsoft SharePoint Server 2010 Service Pack 2
Microsoft Office 2016 for Mac
Microsoft Office 2019 for Mac
Microsoft Excel 2010 Service Pack 2 (64-bit editions)
Microsoft Excel 2016 (64-bit edition)
Microsoft Excel 2016 (32-bit edition)
Microsoft Excel 2013 Service Pack 1 (64-bit editions)
Microsoft Excel 2013 RT Service Pack 1
Microsoft Excel 2010 Service Pack 2 (32-bit editions)
Microsoft Excel 2013 Service Pack 1 (32-bit editions)
Microsoft SharePoint Foundation 2013 Service Pack 1

Install necessary updates from the KB section, that are listed in your Windows Update (Windows Update usually can be accessed from the Control Panel)