CVE-2021-34520: Microsoft SharePoint Server Remote Code Execution Vulnerability

Overview

Severity

High (CVSS 8.1)

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C

Category

Remote Code Execution

Exploit Status

Not Exploited

Exploitation Likelihood

More Likely

Patch Tuesday

2021-Jul

Released

2021-07-13

EPSS Score

4.94% (percentile: 89.6%)

Affected Products (3)

Microsoft Office

• Microsoft SharePoint Enterprise Server 2016
• Microsoft SharePoint Server 2019
• Microsoft SharePoint Foundation 2013 Service Pack 1

Security Updates (3)

• 5001976
• 5001975
• 5001992

Acknowledgments

Anonymous working with <a href="https://www.zerodayinitiative.com/">Trend Micro Zero Day Initiative</a>

Revision History

• 2021-07-13: Information published.