What’s Vulnerable › Vulnerabilities

CVE-2023-35371: Microsoft Office Remote Code Execution Vulnerability

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-08-08 · updated 2026-08-10
• Weakness: CWE-415

Description

Microsoft Office Remote Code Execution Vulnerability

Affected products

• Microsoft 365 Apps: all versions
• Microsoft Office: 2019
• Microsoft Office LTSC for Mac 2021: 2021
• Microsoft Office Online Server: all versions
• Microsoft 365 Apps: from 16.0.1 before https://aka.ms/OfficeSecurityReleases — fixed in https://aka.ms/OfficeSecurityReleases
• Microsoft Office 2019 for Mac: from 16.0.0 before 16.76.23081101 — fixed in 16.76.23081101
• 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 Office LTSC for Mac 2021: from 16.0.1 before 16.76.23081101 — fixed in 16.76.23081101
• Microsoft Office Online Server: from 16.0.1 before 16.0.10401.20022 — fixed in 16.0.10401.20022

How to fix

Upgrade to a fixed version: Microsoft 365 Apps https://aka.ms/OfficeSecurityReleases; Microsoft Office 2019 for Mac 16.76.23081101; Microsoft Office LTSC 2021 https://aka.ms/OfficeSecurityReleases; Microsoft Office https://aka.ms/OfficeSecurityReleases; Microsoft Office LTSC for Mac 2021 16.76.23081101; Microsoft Office Online Server 16.0.10401.20022. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-35371
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-35371

Get alerted when CVE-2023-35371 or the next vulnerability affects your stack