AppleCVE-2026-64699

A memory initialization issue was addressed with improved memory handling

CVE-2026-64699 · Published Jul 27, 2026 · updated Jul 28, 2026

Medium5.5

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

A memory initialization 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. An app may be able to disclose 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:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Severity from: CISA (its enrichment of the CVE record)
Weakness: CWE-457

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