Important CVSS 5.3 EPSS 0.0287 2020-12 archive

Executive Summary

None

Overview

5.3
CVSS MEDIUM
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
Category Information Disclosure
Released Dec 8 2020
Last Updated Dec 8 2020
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.0287 — 0.84975 percentile

CVSS Vector

ATTACK VECTOR
Network
ATTACK COMPLEXITY
High
PRIVILEGES REQUIRED
Low
USER INTERACTION
None
SCOPE
Unchanged
Temporal Score: 4.6

EPSS Score

0.0287
probability of exploitation in the next 30 days
0.84975 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) 4486721 (Security Update) Important Information Disclosure Maybe
Microsoft SharePoint Foundation 2010 Service Pack 2 4493149 (Security Update) Important Information Disclosure Maybe
Microsoft SharePoint Foundation 2013 Service Pack 1 4493138 (Security Update) 4486696 (Security Update) Important Information Disclosure Maybe
Microsoft SharePoint Server 2019 4486751 (Security Update) 4486752 (Security Update) Important Information Disclosure Maybe

Patches

4 patches
Article Type Restart
4486753 (Security Update) 4486721 Security Update Maybe
4493149 Security Update Maybe
4493138 (Security Update) 4486696 Security Update Maybe
4486751 (Security Update) 4486752 Security Update Maybe

Known Exploits

Acknowledgments

@cjm00nw ) of Sangfor & Steven Seeley (@ϻг_ϻε) & Zhiniang Peng(@edwardzpeng)