Critical CVSS 8.1 EPSS 0.03708 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 0.03708 — 0.88599 percentile
NVD CVSS 8.1 HIGH — matches MSRC

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N/E:P/RL:O/RC:C
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
Required
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
None
EXPLOIT CODE MATURITY
Proof-of-Concept
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 7.3

EPSS Score

0.03708
probability of exploitation in the next 30 days
0.88599 percentile - updated 2026-07-25
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