Multiple serious vulnerabilities were found in Microsoft Office. Malicious users can exploit these vulnerabilities to execute arbitrary code, gain privileges, obtain sensitive information.

Below is a complete list of vulnerabilities:

1. Multiple improper object handling vulnerabilities in Microsoft Excel can be exploited remotely to execute arbitrary code;
2. An out-of-bound memory read vulnerability can be exploited remotely to obtain sensitive information;
3. An improper object handling vulnerability in Microsoft PowerPoint can be exploited remotely to execute arbitrary code;
4. An improper object handling vulnerability in Microsoft Excel can be exploited remotely to obtain sensitive information.

Microsoft Excel 2016 Click-to-Run (C2R) for 32-bit editions
Microsoft Excel 2016 Click-to-Run (C2R) for 64-bit editions
Microsoft Excel 2010 Service Pack 2 (32-bit editions)
Microsoft Excel 2010 Service Pack 2 (64-bit editions)
Microsoft Excel 2013 RT Service Pack 1
Microsoft Excel 2013 Service Pack 1 (32-bit editions)
Microsoft Excel 2013 Service Pack 1 (64-bit editions)
Microsoft Excel 2016 (32-bit edition)
Microsoft Excel 2016 (64-bit edition)
Microsoft Excel Viewer 2007 Service Pack 3
Microsoft Office 2016 for Mac
Microsoft Office Compatibility Pack Service Pack 3

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

4018310
4018392
4032213
4032222
4032240
3213636
4022238
4022236
4032220
4032212
4032233
4032239
4022234
4032256
4022195
4032229
4032223
4092434
4022198
4032241
4032215
4092433
4032235