Microsoft Exchange 2016 CU23 SU22 End of Life Date
Microsoft Exchange 2016 CU23 SU22 end-of-life date, support status, and CVE risk. Data from endoflife.date and official vendor documentation.
Microsoft Exchange 2016 was released on October 1, 2015 and support ended on October 14, 2025 — a supported lifespan of 10 years and 1 month, in line with the 10 years and 1 month median for Microsoft Exchange releases. The last patch it will ever receive is 15.1.2507.69, published June 9, 2026 — 8 months after the published end-of-life date. It has been without security patches for 10 months.
Commercial vendors offer security patches beyond EOL. Compare your options.
Compare Options →| Version | Latest | EOL Date | Status |
|---|---|---|---|
| 4.0 SP5 | 4.0.996 | Supported | EOL |
| 5.0 SP2 | 5.0.1460 | Jan 10, 2006 | EOL |
| 5.5 SP4 | 5.5.2653 | Jan 10, 2006 | EOL |
| 2000 SP3 | 6.0.6620.7 | Jan 11, 2011 | EOL |
| 2003 SP2 | 6.5.7654.4 | Apr 8, 2014 | EOL |
| 2007 SP3 UR23 | 8.3.517.0 | Apr 11, 2017 | EOL |
| 2010 SP3 UR32 | 14.3.513.0 | Oct 13, 2020 | EOL |
| 2013 CU23 SU21 | 15.0.1497.48 | Apr 11, 2023 | EOL |
What does Microsoft Exchange 2016 CU23 SU22 end of life mean?
When Microsoft Exchange 2016 CU23 SU22 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: Most vulnerability scanners check for known CVEs but do not flag the ongoing accumulation of unpatched vulnerabilities in EOL software versions. Running Microsoft Exchange 2016 CU23 SU22 past its EOL date creates a permanently growing attack surface that standard security tooling will not surface.
Migrate to Microsoft Exchange Subscription Edition SU7 or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.