Microsoft 365 Apps 2609 End of Life Date
Microsoft 365 Apps 2609 end-of-life date, support status, and CVE risk. Dates read at the vendor's own lifecycle pages (learn.microsoft.com); the source of each date is on the product page.
Microsoft 365 Apps 2609 was released on September 22, 2026 and has no published end-of-life date yet.
What does Microsoft 365 Apps 2609 end of life mean?
When Microsoft 365 Apps 2609 reaches end of life, the maintainers stop issuing security patches for this version. CVEs discovered after the EOL date are publicly disclosed on the National Vulnerability Database with no patch available. Exploit code frequently appears on GitHub within days of disclosure.
The CVE blind spot: A CVE-based scan does not show the ongoing accumulation of unpatched vulnerabilities in EOL software versions. Some scanners flag unsupported versions of common products, but coverage varies, and none of them give you the date in advance. Running Microsoft 365 Apps 2609 past its EOL date creates a growing attack surface that a clean scan result does not rule out.
Migrate to Microsoft 365 Apps 2609 or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.