macOS 27 End of Life Date
macOS 27 end-of-life date, support status, and CVE risk. Data reconciled from official vendor documentation and endoflife.date at every build; the source of each date is on the product page.
macOS 27 was released on September 14, 2026 and has no published end-of-life date yet. Its most recent patch is 27.2, published October 26, 2026.
| Version | Latest | EOL Date | Status |
|---|---|---|---|
| Mac OS X 10.0 (Cheetah) | 10.0.4 | Jun 22, 2001 | EOL |
| Mac OS X 10.1 (Puma) | 10.1.5 | Jun 6, 2002 | EOL |
| Mac OS X 10.2 (Jaguar) | 10.2.8 | Oct 3, 2003 | EOL |
| Mac OS X 10.3 (Panther) | 10.3.9 | Apr 15, 2005 | EOL |
| Mac OS X 10.4 (Tiger) | 10.4.11 | Nov 14, 2007 | EOL |
| Mac OS X 10.5 (Leopard) | 10.5.8 | Aug 13, 2009 | EOL |
| Mac OS X 10.6 (Snow Leopard) | 10.6.8 | Jul 25, 2011 | EOL |
| Mac OS X 10.7 (Lion) | 10.7.5 | Oct 4, 2012 | EOL |
What does macOS 27 end of life mean?
When macOS 27 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 macOS 27 past its EOL date creates a growing attack surface that a clean scan result does not rule out.
Migrate to macOS 27 or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.