Moderate CVSS 8 EPSS 0.02601 2020-12 archive

Executive Summary

None

Overview

8
CVSS HIGH
Moderate
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
Category Spoofing
Released Dec 8 2020
Last Updated Dec 8 2020
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.02601 — 0.83736 percentile
NVD CVSS 8 HIGH — matches MSRC

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
Low
USER INTERACTION
Required
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
High
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 7.0

EPSS Score

0.02601
probability of exploitation in the next 30 days
0.83736 percentile - updated 2026-07-25
View on FIRST.org

Affected Products

3 affected products
Product KB Article Severity Impact Restart Required
Microsoft SharePoint Enterprise Server 2016 4486753 (Security Update) Moderate Spoofing Maybe
Microsoft SharePoint Foundation 2010 Service Pack 2 4493149 (Security Update) Moderate Spoofing Maybe
Microsoft SharePoint Foundation 2013 Service Pack 1 4493138 (Security Update) Moderate Spoofing Maybe

Patches

3 patches
Article Type Restart
4486753 Security Update Maybe
4493149 Security Update Maybe
4493138 Security Update Maybe

Known Exploits

Acknowledgments

Daniel Fröjdendahl of omegapoint.se