What’s Vulnerable › Vulnerabilities

CVE-2025-62199: Microsoft Office Remote Code Execution Vulnerability

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-11-11 · updated 2026-10-18
• Weakness: CWE-416

Description

Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.

Affected products

• Microsoft 365 Apps: all versions
• Microsoft 365 Copilot: before 16.0.19426.20044 — fixed in 16.0.19426.20044
• Microsoft Excel 2013 Service Pack 1: 2016
• Microsoft Office LTSC for Mac 2021: 2021, 2024
• Microsoft 365 Apps: from 16.0.1 before https://aka.ms/OfficeSecurityReleases — fixed in https://aka.ms/OfficeSecurityReleases
• Microsoft Office for Android: from 16.0.1 before 16.0.19426.20044 — fixed in 16.0.19426.20044
• Microsoft Office LTSC 2021: from 16.0.1 before https://aka.ms/OfficeSecurityReleases — fixed in https://aka.ms/OfficeSecurityReleases
• Microsoft Office LTSC for Mac 2024: from 16.0.0 before 16.103.25110922 — fixed in 16.103.25110922
• Microsoft Office: from 16.0.0 before 16.0.5526.1000 — fixed in 16.0.5526.1000
• Microsoft Office LTSC 2024: from 16.0.0 before https://aka.ms/OfficeSecurityReleases — fixed in https://aka.ms/OfficeSecurityReleases
• Microsoft Office LTSC for Mac 2021: from 16.0.1 before 16.103.25110922 — fixed in 16.103.25110922

How to fix

Upgrade to a fixed version: Microsoft 365 Copilot 16.0.19426.20044; Microsoft 365 Apps https://aka.ms/OfficeSecurityReleases; Microsoft Office for Android 16.0.19426.20044; Microsoft Office LTSC 2021 https://aka.ms/OfficeSecurityReleases; Microsoft Office LTSC for Mac 2024 16.103.25110922; Microsoft Office 16.0.5526.1000; Microsoft Office LTSC 2024 https://aka.ms/OfficeSecurityReleases; Microsoft Office LTSC for Mac 2021 16.103.25110922. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-62199
• https://www.vicarius.io/vsociety/posts/cve-2025-62199-detect-microsoft-office-rce-vulnerability
• https://www.vicarius.io/vsociety/posts/cve-2025-62199-mitigate-microsoft-office-rce-vulnerability

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