Question 1

What is the EOL Risk Score for Microsoft Office 2021?

Accepted Answer

Microsoft Office 2021 has an EOL Risk Score™ of 45 out of 100, placing it in the Medium risk band. The score is calculated from four factors: EOL Recency (15/40), Attack Surface (10/30), CISA KEV Exposure (20/20), and Extended Support Availability (0/10).

Question 2

Is Microsoft Office 2021 still supported?

Accepted Answer

Microsoft Office 2021 is currently supported. End of life is scheduled for October 13, 2026. Plan your migration before that date to avoid security risk.

Question 3

When does Microsoft Office 2021 reach end of life?

Accepted Answer

Microsoft Office 2021 reached (or will reach) end of life on October 13, 2026. After this date, no security patches or bug fixes are issued by the vendor.

Question 4

What are the security risks of running Microsoft Office 2021 after end of life?

Accepted Answer

After end of life, Microsoft Office 2021 no longer receives security patches. Any newly discovered CVEs remain unpatched indefinitely. Organizations running EOL software also face compliance violations under SOC 2, PCI DSS, HIPAA, and ISO 27001, which require use of supported software versions.