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Microsoft Office

CVE-2022-21840 — Microsoft Office Remote Code Execution Vulnerability

Critical CVSS 8.8 EPSS 0.03115 2022-01 archive

Executive Summary

None

Overview

8.8
CVSS HIGH
Critical
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
Category Remote Code Execution
Released Jan 11 2022
Last Updated Jan 11 2022
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.03115 — 0.8612 percentile
NVD CVSS 8.8 HIGH — matches MSRC

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
Required
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
High
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 7.7

EPSS Score

0.03115
probability of exploitation in the next 30 days
0.8612 percentile - updated 2026-06-21
View on FIRST.org

Affected Products

17 affected products
Product KB Article Severity Impact Restart Required
Microsoft 365 Apps for Enterprise for 32-bit Systems Click to Run (Security Update) Critical Remote Code Execution No
Microsoft 365 Apps for Enterprise for 64-bit Systems Click to Run (Security Update) Critical Remote Code Execution No
Microsoft Excel 2013 RT Service Pack 1 5002128 (Security Update) Critical Remote Code Execution Maybe
Microsoft Excel 2013 Service Pack 1 (32-bit editions) 5002128 (Security Update) Critical Remote Code Execution Maybe
Microsoft Excel 2013 Service Pack 1 (64-bit editions) 5002128 (Security Update) Critical Remote Code Execution Maybe
Microsoft Excel 2016 (32-bit edition) 5002114 (Security Update) Critical Remote Code Execution Maybe
Microsoft Excel 2016 (64-bit edition) 5002114 (Security Update) Critical Remote Code Execution Maybe
Microsoft Office 2013 RT Service Pack 1 5002064 (Security Update) 5002124 (Security Update) 4462205 (Security Update) Critical Remote Code Execution 5001985 5002104 Base: 8.8 Temporal: 7.7 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 15.0.5415.1000 15.0.5415.1001 Maybe None Microsoft Office 2013 Service Pack 1 (32-bit editions) 5002064 (Security Update) 5002124 (Security Update) 4462205 (Security Update) Critical Remote Code Execution 5001985 5002104 Base: 8.8 Temporal: 7.7 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 15.0.5415.1000 15.0.5415.1001 Maybe None Microsoft Office 2013 Service Pack 1 (64-bit editions) 5002064 (Security Update) 5002124 (Security Update) 4462205 (Security Update) Critical Remote Code Execution 5001985 5002104 Base: 8.8 Temporal: 7.7 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 15.0.5415.1000 15.0.5415.1001 Maybe None Microsoft Office 2016 (32-bit edition) 5002060 (Security Update) 5002115 (Security Update) 5002052 (Security Update) Critical Remote Code Execution 5001982 5002099 Base: 8.8 Temporal: 7.7 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 16.0.5266.1000 16.0.5266.1001 Maybe None Microsoft Office 2016 (64-bit edition) 5002060 (Security Update) 5002115 (Security Update) 5002052 (Security Update) Critical Remote Code Execution 5001982 5002099 Base: 8.8 Temporal: 7.7 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 16.0.5266.1000 16.0.5266.1001 Maybe None Microsoft Office 2019 for 32-bit editions Click to Run (Security Update) Critical Remote Code Execution No
Microsoft Office 2019 for 64-bit editions Click to Run (Security Update) Critical Remote Code Execution No
Microsoft Office 2019 for Mac Release Notes (Security Update) Critical Remote Code Execution Maybe
Microsoft Office LTSC 2021 for 32-bit editions Click to Run (Security Update) Critical Remote Code Execution No
Microsoft Office LTSC 2021 for 64-bit editions Click to Run (Security Update) Critical Remote Code Execution No
Microsoft Office LTSC for Mac 2021 Release Notes (Security Update) Critical Remote Code Execution Maybe
Microsoft Office Online Server 5002107 (Security Update) Critical Remote Code Execution Maybe
Microsoft Office Web Apps Server 2013 Service Pack 1 5002122 (Security Update) Critical Remote Code Execution Maybe
Microsoft SharePoint Enterprise Server 2013 Service Pack 1 5001995 (Security Update) 5002102 (Security Update) Critical Remote Code Execution 4011599 5002063 Base: 8.8 Temporal: 7.7 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 15.0.5415.1000 Maybe None Microsoft SharePoint Enterprise Server 2016 5002113 (Security Update) 5002118 (Security Update) Critical Remote Code Execution 5002055 5002059 Base: 8.8 Temporal: 7.7 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 16.0.5266.1000 Maybe 5002113 Microsoft SharePoint Foundation 2013 Service Pack 1 5002127 (Security Update) 5002129 (Security Update) Critical Remote Code Execution 5002071 5002015 Base: 8.8 Temporal: 7.7 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 15.0.5415.1000 Maybe 5002127 Microsoft SharePoint Server 2019 5002109 (Security Update) 5002108 (Security Update) Critical Remote Code Execution 5002054 5002061 Base: 8.8 Temporal: 7.7 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 16.0.10382.20004 Maybe 5002109 Microsoft SharePoint Server Subscription Edition 5002111 (Security Update) Critical Remote Code Execution Maybe
SharePoint Server Subscription Edition Language Pack 5002110 (Security Update) Critical Remote Code Execution Maybe

Patches

8 patches
Article Type Restart
Click to Run Security Update No
5002128 Security Update Maybe
5002114 Security Update Maybe
Release Notes Security Update Maybe
5002107 Security Update Maybe
5002122 Security Update Maybe
5002111 Security Update Maybe
5002110 Security Update Maybe

Known Exploits

Acknowledgments

Anonymous Finder

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