AppleCVE-2026-43771

Apple macOS: denial of service

CVE-2026-43771 · Published Jul 27, 2026 · updated Jul 28, 2026

High7.1

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

A stack overflow was addressed with improved input validation. 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 cause a denial-of-service.

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:H
Severity from: CISA (its enrichment of the CVE record)
Weakness: CWE-121

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