CVE-2024-38189
HighExploitedPublic exploitMicrosoft Project Remote Code Execution Vulnerability
Published Aug 14, 2024 · Updated Oct 21, 2025 · Also known as TR-24-1239
Key Facts
Patch immediately- CVE-2024-38189 is a high-severity vulnerability (CVSS 8.8 v3.1) affecting 365 Apps (Microsoft), Office 2019 (Microsoft), Office Long Term Servicing Channel (Microsoft) and 3 more products.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Aug 13, 2024. Public exploit code is available.
- EPSS estimates a 8.2% probability of exploitation in the next 30 days.
- Fixed versions are available, including Microsoft 365 Apps for Enterprise https://aka.ms/OfficeSecurityReleases, Office 2019 https://aka.ms/OfficeSecurityReleases, Microsoft Office LTSC 2021 https://aka.ms/OfficeSecurityReleases.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
8.2%
Higher than 94.8% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2024-38189 brief as a PDF
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Description
Microsoft Project Remote Code Execution Vulnerability
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Aug 13, 2024 | Sep 3, 2024 | Not reported |
| Industry KEV feed | Aug 13, 2024 | Sep 3, 2024 | Not reported |
| CIRCL KEV | Aug 13, 2024 | Sep 3, 2024 | Not reported |
| ENISA EUVD | Aug 13, 2024 | n/a | Not reported |
Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Affected Products
10 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| 365 AppsMicrosoft | See advisory | n/a |
| Office 2019Microsoft | >= 19.0.0 | https://aka.ms/OfficeSecurityReleases |
| Office Long Term Servicing ChannelMicrosoft | 2021 | n/a |
| Project 2016Microsoft | >= 16.0.0.0 | 16.0.5461.1001 |
| Microsoft 365 Apps for Enterprise | >= 16.0.1 | https://aka.ms/OfficeSecurityReleases |
Patched Releases
Microsoft 365 Apps for Enterprise
https://aka.ms/OfficeSecurityReleases
Office 2019
https://aka.ms/OfficeSecurityReleases
Microsoft Office LTSC 2021
https://aka.ms/OfficeSecurityReleases
Project 2016
16.0.5461.1001
Timeline
Added to CISA KEV
Aug 13, 2024
Added to Industry KEV feed
Aug 13, 2024
Added to CIRCL KEV
Aug 13, 2024
Added to ENISA EUVD
Aug 13, 2024
Publicly disclosed
Aug 14, 2024
Last updated
Oct 21, 2025
Weakness Type
- CWE-20 Improper Input Validation
References
- advisoryMicrosoft Project Remote Code Execution Vulnerability
- advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2024-38189
- advisoryUSOM advisory
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
FAQ
Common Questions.
Microsoft Project Remote Code Execution Vulnerability
Affected: 365 Apps (Microsoft); Office 2019 (Microsoft) versions >= 19.0.0; Office Long Term Servicing Channel (Microsoft) versions 2021, among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Aug 13, 2024.
Yes. It was added on Aug 13, 2024 with a federal remediation due date of Sep 3, 2024.
Public exploit code is available.
Fixed versions are available, including Microsoft 365 Apps for Enterprise https://aka.ms/OfficeSecurityReleases, Office 2019 https://aka.ms/OfficeSecurityReleases, Microsoft Office LTSC 2021 https://aka.ms/OfficeSecurityReleases.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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