CVE-2021-27076: Microsoft SharePoint Server 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

2021-Mar

Released

2021-03-09

EPSS Score

9.72% (percentile: 92.9%)

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

Security Updates (4)

• 4493232
• 4493230
• 3101541
• 4493238

Acknowledgments

Anonymous working with Trend Micro Zero Day Initiative

Revision History

• 2021-03-09: Information published.