Important CVSS 7.8 EPSS 0.02984 2020-12 archive

Executive Summary

None

Overview

7.8
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
Less 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 0.02984 — 0.85542 percentile

CVSS Vector

ATTACK VECTOR
Local
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
Required
SCOPE
Unchanged
Temporal Score: 6.8

EPSS Score

0.02984
probability of exploitation in the next 30 days
0.85542 percentile - updated 2026-06-20
View on FIRST.org

Affected Products

13 affected products
Product KB Article Severity Impact Restart Required
Microsoft 365 Apps for Enterprise for 32-bit Systems Click to Run (Security Update) Important Remote Code Execution No
Microsoft 365 Apps for Enterprise for 64-bit Systems Click to Run (Security Update) Important Remote Code Execution No
Microsoft Excel 2010 Service Pack 2 (32-bit editions) 4493148 (Security Update) Important Remote Code Execution Maybe
Microsoft Excel 2010 Service Pack 2 (64-bit editions) 4493148 (Security Update) Important Remote Code Execution Maybe
Microsoft Excel 2013 RT Service Pack 1 4493139 (Security Update) Important Remote Code Execution Maybe
Microsoft Excel 2013 Service Pack 1 (32-bit editions) 4493139 (Security Update) Important Remote Code Execution Maybe
Microsoft Excel 2013 Service Pack 1 (64-bit editions) 4493139 (Security Update) Important Remote Code Execution Maybe
Microsoft Excel 2016 (32-bit edition) 4486754 (Security Update) Important Remote Code Execution Maybe
Microsoft Excel 2016 (64-bit edition) 4486754 (Security Update) Important Remote Code Execution Maybe
Microsoft Office 2019 for 32-bit editions Click to Run (Security Update) Important Remote Code Execution No
Microsoft Office 2019 for 64-bit editions Click to Run (Security Update) Important Remote Code Execution No
Microsoft Office Online Server 4486750 (Security Update) Important Remote Code Execution Maybe
Microsoft Office Web Apps 2013 Service Pack 1 4486760 (Security Update) Important Remote Code Execution Maybe

Patches

6 patches
Article Type Restart
Click to Run Security Update No
4493148 Security Update Maybe
4493139 Security Update Maybe
4486754 Security Update Maybe
4486750 Security Update Maybe
4486760 Security Update Maybe

Known Exploits

Acknowledgments

kdot working with Trend Micro Zero Day Initiative