Release record
Release notes
Editorial synthesis with inline references and a source ledger when citations are available.
Apple described iOS 12.4.1 as a recommended security and stability update without listing separate consumer-facing features or ordinary bug fixes.[1]
The security bulletin identifies one kernel use-after-free vulnerability that could let a malicious application execute code with system privileges, addressed through improved memory management.[2]
Source ledger
Sources are linked to the claims they support. Publication and access dates are shown when available.
Apple Support · 2026-07-29 · Kernel — CVE-2019-8605
Apple Support · 2026-07-29 · Released August 26, 2019
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
Apple addressed CVE-2019-8605, a kernel memory-safety issue that could let a malicious application gain system privileges.
Recorded at Public
Milestones
Every recorded channel appearance in chronological order. Open an appearance for any available build, scope, notes, and sources.
Public release
The public iOS 12.4.1 release was a security-focused maintenance update whose published bulletin documents a kernel use-after-free correction.
Historical context
Pace, intervals, and duration compared with earlier releases on the same platform.
Historical avg for .4.1 releases
40 days, 6.0 milestones
Based on 1 previous iOS .4.1 releases
| Version | Year | Cycle | Milestones | Avg. Interval |
|---|---|---|---|---|
| iOS 11.4.1 | 2018 | 40d | 6 | 8d |
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