CVE-2024-20673 — Microsoft Office Remote Code Execution Vulnerability

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 Feb 13 2024

Last Updated Feb 13 2024

Publicly Disclosed No

CISA KEV Not Listed

Known Exploits None Known

EPSS Score 0.01177 — 0.63515 percentile

NVD CVSS 7.8 HIGH — matches MSRC

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

ATTACK VECTOR

Local

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: 6.8

EPSS Score

0.01177

probability of exploitation in the next 30 days

0.63515 percentile - updated 2026-06-21

View on FIRST.org

Affected Products

16 affected products

Product	KB Article	Severity	Impact	Restart Required
Microsoft Excel 2016 (32-bit edition)	`5002536 (Security Update)`	Important	Remote Code Execution	Maybe
Microsoft Excel 2016 (64-bit edition)	`5002536 (Security Update)`	Important	Remote Code Execution	Maybe
Microsoft Office 2016 (32-bit edition) 5002537 (Security Update) 5002467 (Security Update) 5002522 (Security Update) 5002469 (Security Update) Important Remote Code Execution Base: 7.8 Temporal: 6.8 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 16.0.5435.1001 Maybe None Microsoft Office 2016 (64-bit edition) 5002537 (Security Update) 5002467 (Security Update) 5002522 (Security Update) 5002469 (Security Update) Important Remote Code Execution Base: 7.8 Temporal: 6.8 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 16.0.5435.1001 Maybe None 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 LTSC 2021 for 32-bit editions	`Click to Run (Security Update)`	Important	Remote Code Execution	No
Microsoft Office LTSC 2021 for 64-bit editions	`Click to Run (Security Update)`	Important	Remote Code Execution	No
Microsoft PowerPoint 2016 (32-bit edition)	`5002495 (Security Update)`	Important	Remote Code Execution	Maybe
Microsoft PowerPoint 2016 (64-bit edition)	`5002495 (Security Update)`	Important	Remote Code Execution	Maybe
Microsoft Publisher 2016 (32-bit edition)	`5002492 (Security Update)`	Important	Remote Code Execution	Maybe
Microsoft Publisher 2016 (64-bit edition)	`5002492 (Security Update)`	Important	Remote Code Execution	Maybe
Microsoft Visio 2016 (32-bit edition)	`5002491 (Security Update)`	Important	Remote Code Execution	Maybe
Microsoft Visio 2016 (64-bit edition)	`5002491 (Security Update)`	Important	Remote Code Execution	Maybe
Microsoft Word 2016 (32-bit edition)	`5002542 (Security Update)`	Important	Remote Code Execution	Maybe
Microsoft Word 2016 (64-bit edition)	`5002542 (Security Update)`	Important	Remote Code Execution	Maybe
Skype for Business 2016 (32-bit)	`5002181 (Security Update)`	Important	Remote Code Execution	Maybe
Skype for Business 2016 (64-bit)	`5002181 (Security Update)`	Important	Remote Code Execution	Maybe

Patches

7 patches

Article	Type	Restart
`5002536`	Security Update	Maybe
`Click to Run`	Security Update	No
`5002495`	Security Update	Maybe
`5002492`	Security Update	Maybe
`5002491`	Security Update	Maybe
`5002542`	Security Update	Maybe
`5002181`	Security Update	Maybe

Known Exploits

No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.

Acknowledgments

Anonymous

References

MSRC Advisory MITRE NVD