Release record
Release notes
Editorial synthesis with inline references and a source ledger when citations are available.
macOS Tahoe 26.3 reached the public channel on February 11, 2026. macOS Tahoe 26.3 was a maintenance release that Apple described as providing important bug fixes and security updates rather than a named consumer feature set.[1][2]
Apple's detailed advisory spans access control, privilege boundaries, media and file parsing, networking, privacy, sandboxing, and web components. The dyld exploitation note refers to targeted attacks on versions of iOS before iOS 26, not to a confirmed macOS 26.3 compromise.[3]
Source ledger
Sources are linked to the claims they support. Publication and access dates are shown when available.
Apple Support · Apple · 2026-07-30 · macOS Tahoe 26.3 — Released 2026-02-11
Apple Support · Apple · 2026-07-29 · macOS Tahoe 26.3
Apple Support · Apple · 2026-07-30 · macOS Tahoe 26.3 — security content
Documented & observed
Source-linked features, fixes, known issues, removals, and community-observed behavior recorded across this version’s appearances and verified builds.
Release changes
Features, fixes, removals, and regressions first observed in this release record.
security · fixed
Bounds, memory, and validation work covered ImageIO, Model I/O, CoreAudio, libexpat, GPU drivers, and other crafted-file paths.
Recorded at Public
bugFix · fixed
Apple classified 26.3 as an important bug-fix release but did not publish a more granular consumer-facing defect list.
Recorded at Public
security · fixed
The advisory documents root-privilege, sandbox-escape, protected-data, and authorization fixes across CoreServices, Remote Management, Security, Setup Assistant, and related frameworks.
Recorded at Public
security · fixed
Apple fixed a dyld memory-corruption path and said the underlying issue may have been used in a highly targeted attack on versions of iOS before iOS 26; the advisory does not say macOS 26.3 was exploited.
Recorded at Public
security · fixed
Apple repaired Foundation paths that could expose sensitive data, monitor keystrokes without permission, or access protected information, together with logging and temporary-file privacy issues.
Recorded at Public
security · fixed
Apple corrected remote-content handling in Mail, Safari history access, sandbox permissions, Screen Time access controls, and related sensitive-data paths.
Recorded at Public
security · fixed
The release addressed crafted Bluetooth denial of service, arbitrary-file writing through CFNetwork, kernel traffic interception, and kernel memory or stability problems.
Recorded at Public
Milestones
Every recorded channel appearance in chronological order. Open an appearance for any available build, scope, notes, and sources.
Developer beta
Developer beta
Developer beta
Release candidate
Public release
macOS Tahoe 26.3 reached the public channel on 2026-02-11. macOS Tahoe 26.3 was a maintenance release that Apple described as providing important bug fixes and security updates rather than a named consumer feature set.
Historical context
Pace, intervals, and duration compared with earlier releases on the same platform.
Historical avg for .3 releases
42 days, 5.0 milestones
Based on 1 previous macOS .3 releases
Cycle vs. platform average
58d (avg: 105d)
47 days shorter than the macOS average
Longest gap in this cycle
28 days
Between Beta 1 and Beta 2
| Version | Year | Cycle | Milestones | Avg. Interval |
|---|---|---|---|---|
| macOS 15.3 | 2025 | 42d | 5 | 11d |
Scroll horizontally to compare every historical field.