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CVE-2024-38189: Microsoft Project Remote Code Execution Vulnerability

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2024-08-13
• EPSS: 8.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-08-13 · updated 2026-06-17
• Weakness: CWE-20

Description

Microsoft Project Remote Code Execution Vulnerability

Affected products

• Microsoft 365 Apps: all versions
• Microsoft Office 2019: all versions
• Microsoft Office LTSC for Mac 2021: 2021
• Microsoft Project 2016: before 16.0.5461.1001 — fixed in 16.0.5461.1001
• Microsoft 365 Apps: from 16.0.1 before https://aka.ms/OfficeSecurityReleases — fixed in https://aka.ms/OfficeSecurityReleases
• Microsoft Office LTSC 2021: from 16.0.1 before https://aka.ms/OfficeSecurityReleases — fixed in https://aka.ms/OfficeSecurityReleases
• Microsoft Office: from 19.0.0 before https://aka.ms/OfficeSecurityReleases — fixed in https://aka.ms/OfficeSecurityReleases
• Microsoft Project 2016: from 16.0.0.0 before 16.0.5461.1001 — fixed in 16.0.5461.1001

How to fix

Upgrade to a fixed version: Microsoft Project 2016 16.0.5461.1001; Microsoft 365 Apps https://aka.ms/OfficeSecurityReleases; Microsoft Office LTSC 2021 https://aka.ms/OfficeSecurityReleases; Microsoft Office https://aka.ms/OfficeSecurityReleases; Microsoft Project 2016 16.0.5461.1001. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-38189
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-38189

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