Apple has just released macOS 26.0.1 Tahoe, which fixes the problem upgrading to 26.0 on Mac Studio M3 Ultra models, and apparently fixes other urgent bugs.

For Apple silicon, the update is a 1.76 GB download.

Tahoe 26.0.1 fixes a single vulnerability, although Apple doesn’t report that it’s already being exploited. The same is also fixed in Sequoia 15.7.1, and in Sonoma 14.8.1.

macOS 26.0.1 has build number of 25A362, Safari version 26.0.1 (21622.1.22.11.15), and a Darwin Kernel version of 25.0.0. There has been no change in iBoot firmware, which remains at 13822.1.2.

As Apple hasn’t been forthcoming about what else has changed, here’s my list:

• Passwords app has gone from version 2.0 to 2.0.1, suggesting it has at least one significant bug fixed.
• AppKit framework has had an increment in build number, also suggesting bug fixes.
• CoreText framework likewise, with bug fixes for a higher build number, possibly related to the fixed vulnerability in font handling.
• Security framework has a substantial increase in build number, implying bug fixes there as well.

Otherwise, remarkably little has changed.

Updated 1910 29 September 2025.