AppleCVE-2026-64696

Apple macOS: memory corruption

CVE-2026-64696 · Published Jul 27, 2026 · updated Jul 28, 2026

Critical9.8

Fix: upgrade to 14.8.8 or later (3 fixed versions below)

The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. A remote user may be able to cause unexpected system termination or corrupt kernel memory.

Affected versions

Package	Affected	Fixed in
macOS Product	< 14.8.8	14.8.8
	< 15.7.8	15.7.8
	< 26.6	26.6

Details and references

CVSS 3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity from: CISA (its enrichment of the CVE record)
Weakness: CWE-119

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Critical 9.8Jul 27

Apple iOS and iPadOS: out-of-bounds writeCVE-2026-64769fixed in 18.7.10 +3 Critical 9.8Jul 27

Apple iOS and iPadOS: out-of-bounds writeCVE-2026-64770fixed in 18.7.10 +3 Critical 9.8Jul 27

Apple iOS and iPadOS: buffer overflowCVE-2026-64771fixed in 18.7.10 +2 Critical 9.8Jul 27

Apple iOS and iPadOS: out-of-bounds writeCVE-2026-64772fixed in 18.7.10 +2 Critical 9.8Jul 27

Apple iOS and iPadOS: integer overflowCVE-2026-64774fixed in 18.7.10 +3 Critical 9.8Jul 27

A memory initialization issue was addressed with improved memory handlingCVE-2026-64775fixed in 26.6 +2