AppleCVE-2026-43777

Apple macOS: denial of service

CVE-2026-43777 · Published Jul 27, 2026 · updated Jul 28, 2026

High7.5

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

This issue 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. A remote attacker 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:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Severity from: CISA (its enrichment of the CVE record)
Weakness: CWE-20

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