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CVE-2022-26901: Microsoft Excel Remote Code Execution Vulnerability

• Severity: medium (CVSS 6.8 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-04-15 · updated 2026-06-17

Description

Microsoft Excel Remote Code Execution Vulnerability

Affected products

• Microsoft 365 Apps: all versions
• Microsoft Excel 2013 Service Pack 1: 2013-sp1, 2016
• Microsoft Excel Rt: 2013-sp1
• Microsoft Office: 2013-sp1, 2013_rt-sp1, 2016, 2019
• Microsoft Office LTSC for Mac 2021: 2021
• Microsoft Office Online Server: all versions
• Microsoft Office Web Apps Server: 2013-sp1
• 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 15.0.5441.1000 — fixed in 15.0.5441.1000
• Microsoft Excel 2016: from 16.0.0.0 before 16.0.5305.1000 — fixed in 16.0.5305.1000
• Microsoft Office 2013 Service Pack 1: from 15.0.0 before 15.0.5441.1000 — fixed in 15.0.5441.1000
• Microsoft Office 2019 for Mac: from 16.0.0 before 16.60.22041000 — fixed in 16.60.22041000
• 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 15.0.5441.1000 — fixed in 15.0.5441.1000
• Microsoft Office: from 16.0.0 before 16.0.5305.1000 — fixed in 16.0.5305.1000
• Microsoft Office LTSC for Mac 2021: from 16.0.1 before 16.60.22041000 — fixed in 16.60.22041000
• Microsoft Office Online Server: from 16.0.1 before 16.0.10385.20001 — fixed in 16.0.10385.20001

How to fix

Upgrade to a fixed version: Microsoft 365 Apps https://aka.ms/OfficeSecurityReleases; Microsoft Excel 2013 Service Pack 1 15.0.5441.1000; Microsoft Excel 2016 16.0.5305.1000; Microsoft Office 2013 Service Pack 1 15.0.5441.1000; Microsoft Office 2019 for Mac 16.60.22041000; Microsoft Office LTSC 2021 https://aka.ms/OfficeSecurityReleases; Microsoft Office Web Apps Server 2013 Service Pack 1 15.0.5441.1000; Microsoft Office 16.0.5305.1000; Microsoft Office LTSC for Mac 2021 16.60.22041000; Microsoft Office Online Server 16.0.10385.20001. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-26901
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-26901

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