Critical CVSS 8.1 EPSS 0.03564 2020-12 archive

Executive Summary

None

Overview

8.1
CVSS HIGH
Critical
MS Severity
Not Exploited
MS Exploit Status
More Likely
MS Exploit Likelihood
Category Remote Code Execution
Released Dec 8 2020
Last Updated Dec 8 2020
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.03564 — 0.87856 percentile

CVSS Vector

ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
Required
SCOPE
Unchanged
Temporal Score: 7.3

EPSS Score

0.03564
probability of exploitation in the next 30 days
0.87856 percentile - updated 2026-06-20
View on FIRST.org

Affected Products

4 affected products
Product KB Article Severity Impact Restart Required
Microsoft SharePoint Enterprise Server 2016 4486753 (Security Update) Critical Remote Code Execution Maybe
Microsoft SharePoint Foundation 2010 Service Pack 2 4493149 (Security Update) Critical Remote Code Execution Maybe
Microsoft SharePoint Foundation 2013 Service Pack 1 4493138 (Security Update) Critical Remote Code Execution Maybe
Microsoft SharePoint Server 2019 4486751 (Security Update) Critical Remote Code Execution Maybe

Patches

4 patches
Article Type Restart
4486753 Security Update Maybe
4493149 Security Update Maybe
4493138 Security Update Maybe
4486751 Security Update Maybe

Known Exploits

Acknowledgments

Jonathan Birch of Microsoft Office Security Team