CVE-2020-17121: Microsoft SharePoint Remote Code Execution Vulnerability

Overview

Severity

High (CVSS 8.8)

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Category

Remote Code Execution

Exploit Status

Not Exploited

Exploitation Likelihood

More Likely

Patch Tuesday

2020-Dec

Released

2020-12-08

EPSS Score

13.47% (percentile: 94.2%)

FAQ

What is the attack vector for this vulnerability? In a network-based attack an attacker could gain access to create a site and could execute code remotely. The attacker would need to have privileges.

Affected Products (4)

Microsoft Office

• Microsoft SharePoint Foundation 2013 Service Pack 1
• Microsoft SharePoint Foundation 2010 Service Pack 2
• Microsoft SharePoint Server 2019
• Microsoft SharePoint Enterprise Server 2016

Security Updates (4)

• 4493138
• 4493149
• 4486751
• 4486753

Acknowledgments

working with Trend Micro Zero Day Initiative

Revision History

• 2020-12-08: Information published.