CVE-2023-32029
HighMicrosoft Excel Remote Code Execution Vulnerability
Published Jun 14, 2023 · Updated Nov 4, 2025 · Also known as TR-23-0356
Key Facts
Patch immediately- CVE-2023-32029 is a high-severity vulnerability (CVSS 7.8 v3.1) affecting 365 Apps (Microsoft), Excel (Microsoft), Office (Microsoft) and 9 more products.
- It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
- EPSS estimates a 54% probability of exploitation in the next 30 days.
- Fixed versions are available, including Microsoft 365 Apps for Enterprise https://aka.ms/OfficeSecurityReleases, Microsoft Excel 2013 Service Pack 1 15.0.5563.1000, Microsoft Excel 2016 16.0.5400.1000.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v3.1
7.8
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
54%
Higher than 98.9% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
None known
Get the full CVE-2023-32029 brief as a PDF
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Description
Microsoft Excel Remote Code Execution Vulnerability
Affected Products
22 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| 365 AppsMicrosoft | See advisory | n/a |
| ExcelMicrosoft | 2013-sp1, 2016 | n/a |
| OfficeMicrosoft | 2019 | n/a |
| Office Long Term Servicing ChannelMicrosoft | 2021 | n/a |
| Office Online ServerMicrosoft | >= 16.0.1 | 16.0.10399.20000 |
Patched Releases
Microsoft 365 Apps for Enterprise
https://aka.ms/OfficeSecurityReleases
Microsoft Excel 2013 Service Pack 1
15.0.5563.1000
Microsoft Excel 2016
16.0.5400.1000
Microsoft Office 2019
https://aka.ms/OfficeSecurityReleases
Microsoft Office 2019 for Mac
16.74.23061100
Microsoft Office LTSC 2021
https://aka.ms/OfficeSecurityReleases
Microsoft Office LTSC for Mac 2021
16.74.23061100
Office Online Server
16.0.10399.20000
Timeline
Publicly disclosed
Jun 14, 2023
Last updated
Nov 4, 2025
Weakness Type
- CWE-125 Out-of-bounds Read
References
- advisoryMicrosoft Excel Remote Code Execution Vulnerability
- advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-33133
- advisoryhttps://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-32029
- advisoryhttps://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-33133
- advisoryhttps://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-33137
FAQ
Common Questions.
Microsoft Excel Remote Code Execution Vulnerability
Affected: 365 Apps (Microsoft); Excel (Microsoft) versions 2013-sp1, 2016; Office (Microsoft) versions 2019, among others. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including Microsoft 365 Apps for Enterprise https://aka.ms/OfficeSecurityReleases, Microsoft Excel 2013 Service Pack 1 15.0.5563.1000, Microsoft Excel 2016 16.0.5400.1000.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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