iMac (Retina 5K, 27-inch, 2020)
Still receiving security updates
The newest macOS this device can run is macOS Tahoe (26).
macOS Tahoe (26) last got a security update on 28 September 2026. (8 days without a security update)
If your Mac runs an older version, this does not apply to you. Upgrading to macOS Tahoe (26) is free and is what this status assumes.
What we do and do not know about a Mac
For an iPhone, Apple names the device in the advisory. For a Mac it does not: it only says "Available for: macOS Tahoe". So we do not know that this Mac got a patch, but that a patch exists for the newest macOS it can run. That is a weaker statement and we keep it that way here.
According to Apple it also runs: macOS Sequoia (15), macOS Sonoma (14), macOS Ventura (13), macOS Monterey (12), macOS Big Sur (11).
Security updates for macOS Tahoe (26)
| Date | Version | Vulnerabilities |
|---|---|---|
| 28 September 2026 | macOS Tahoe 26.7.1 | 1 |
| 14 September 2026 | macOS Tahoe 26.7 | 154 |
| 17 August 2026 | macOS Tahoe 26.6.2 | 34 |
| 6 August 2026 | macOS Tahoe 26.6.1 | 1 |
| 27 July 2026 | macOS Tahoe 26.6 | 170 |
| 29 June 2026 | macOS Tahoe 26.5.2 | 38 |
| 11 May 2026 | macOS Tahoe 26.5 | 87 |
| 24 March 2026 | macOS Tahoe 26.4 | 86 |
| 11 February 2026 | macOS Tahoe 26.3 | 65 |
| 12 December 2025 | macOS Tahoe 26.2 | 60 |
| 3 November 2025 | macOS Tahoe 26.1 | 115 |
| 29 September 2025 | macOS Tahoe 26.0.1 | 1 |
| 15 September 2025 | macOS Tahoe 26 | 97 |
Where this comes from
Which Macs can run which macOS is on Apple's own compatibility page. Fetched on 16 September 2026. https://support.apple.com/en-us/122867