Important CVSS 6.5 EPSS 0.03722 2020-12 archive

Executive Summary

None

Overview

6.5
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 0.03722 — 0.88818 percentile
NVD CVSS 6.5 MEDIUM — matches MSRC

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/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
None
AVAILABILITY
None
EXPLOIT CODE MATURITY
Proof-of-Concept
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 5.9

EPSS Score

0.03722
probability of exploitation in the next 30 days
0.88818 percentile - updated 2026-08-14
View on FIRST.org

Affected Products

12 affected products
Product KB Article Severity Impact Restart Required
Microsoft 365 Apps for Enterprise for 32-bit Systems Click to Run (Security Update) Important Information Disclosure No
Microsoft 365 Apps for Enterprise for 64-bit Systems Click to Run (Security Update) Important Information Disclosure No
Microsoft Office 2019 for 32-bit editions Click to Run (Security Update) Important Information Disclosure No
Microsoft Office 2019 for 64-bit editions Click to Run (Security Update) Important Information Disclosure No
Microsoft Office 2019 for Mac Release Notes (Security Update) Important Information Disclosure No
Microsoft Outlook 2010 Service Pack 2 (32-bit editions) 4486742 (Security Update) Important Information Disclosure Maybe
Microsoft Outlook 2010 Service Pack 2 (64-bit editions) 4486742 (Security Update) Important Information Disclosure Maybe
Microsoft Outlook 2013 RT Service Pack 1 4486732 (Security Update) Important Information Disclosure Maybe
Microsoft Outlook 2013 Service Pack 1 (32-bit editions) 4486732 (Security Update) Important Information Disclosure Maybe
Microsoft Outlook 2013 Service Pack 1 (64-bit editions) 4486732 (Security Update) Important Information Disclosure Maybe
Microsoft Outlook 2016 (32-bit edition) 4486748 (Security Update) Important Information Disclosure Maybe
Microsoft Outlook 2016 (64-bit edition) 4486748 (Security Update) Important Information Disclosure Maybe

Patches

5 patches
Article Type Restart
Click to Run Security Update No
Release Notes Security Update No
4486742 Security Update Maybe
4486732 Security Update Maybe
4486748 Security Update Maybe

Exploits & PoC

Detection Rules

Acknowledgments

working with Trend Micro Zero Day Initiative