What’s Vulnerable › Vulnerabilities

CVE-2022-21840: Microsoft Office Remote Code Execution Vulnerability

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-01-11 · updated 2026-06-17

Description

Microsoft Office Remote Code Execution Vulnerability

Affected products

• Microsoft Excel 2013 Service Pack 1: 2013-sp1, 2016
• Microsoft Office: 2013-sp1, 2016, 2019
• Microsoft Office LTSC for Mac 2021: 2021
• Microsoft Office Online Server: all versions
• Microsoft Office Web Apps: 2013-sp1
• Microsoft SharePoint Server: 2013-sp1
• Microsoft SharePoint Server: 2013-sp1, 2016, 2019
• Microsoft 365 Apps: from 16.0.1 before https://aka.ms/OfficeSecurityReleases — fixed in https://aka.ms/OfficeSecurityReleases
• Microsoft Excel 2013 Service Pack 1: from 15.0.0.0 before 15.0.5415.1000 — fixed in 15.0.5415.1000
• Microsoft Excel 2016: from 16.0.0.0 before 16.0.5266.1000 — fixed in 16.0.5266.1000
• Microsoft Office 2013 Service Pack 1: from 15.0.0 before 15.0.5415.1000 — fixed in 15.0.5415.1000
• Microsoft Office 2019 for Mac: from 16.0.0 before 16.57.22011101 — fixed in 16.57.22011101
• Microsoft Office LTSC 2021: from 16.0.1 before https://aka.ms/OfficeSecurityReleases — fixed in https://aka.ms/OfficeSecurityReleases
• Microsoft Office Web Apps Server 2013 Service Pack 1: from 15.0.1 before 15.0.5415.1000 — fixed in 15.0.5415.1000
• Microsoft SharePoint Enterprise Server 2013 Service Pack 1: from 15.0.0 before 15.0.5415.1000 — fixed in 15.0.5415.1000
• Microsoft SharePoint Server Subscription Edition: from 16.0.0 before 16.0.14326.20714 — fixed in 16.0.14326.20714
• 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 16.57.22011101 — fixed in 16.57.22011101
• Microsoft Office Online Server: from 16.0.1 before 16.0.10382.20004 — fixed in 16.0.10382.20004
• Microsoft Sharepoint Enterprise Server 2016: from 16.0.0 before 16.0.5266.1000 — fixed in 16.0.5266.1000
• Microsoft SharePoint Foundation 2013 Service Pack 1: from 15.0.0 before 15.0.5415.1000 — fixed in 15.0.5415.1000
• Microsoft SharePoint Server: from 16.0.0 before 16.0.10382.20004 — fixed in 16.0.10382.20004
• Microsoft SharePoint Server Subscription Edition Language Pack: from 16.0.0 before 16.0.14326.20714 — fixed in 16.0.14326.20714

How to fix

Upgrade to a fixed version: Microsoft 365 Apps https://aka.ms/OfficeSecurityReleases; Microsoft Excel 2013 Service Pack 1 15.0.5415.1000; Microsoft Excel 2016 16.0.5266.1000; Microsoft Office 2013 Service Pack 1 15.0.5415.1000; Microsoft Office 2019 for Mac 16.57.22011101; Microsoft Office LTSC 2021 https://aka.ms/OfficeSecurityReleases; Microsoft Office Web Apps Server 2013 Service Pack 1 15.0.5415.1000; Microsoft SharePoint Enterprise Server 2013 Service Pack 1 15.0.5415.1000; Microsoft SharePoint Server Subscription Edition 16.0.14326.20714; Microsoft Office https://aka.ms/OfficeSecurityReleases; Microsoft Office LTSC for Mac 2021 16.57.22011101; Microsoft Office Online Server 16.0.10382.20004. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-21840
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-21840

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