AppleCVE-2026-65408

Apple iOS and iPadOS: integer overflow

CVE-2026-65408 · Published Sep 14, 2026 · updated Sep 17, 2026

Medium5.5

Fix: upgrade to 26.7 or later (3 fixed versions below)

An integer overflow was addressed with improved input validation. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. An app may be able to cause unexpected system termination.

Affected versions

Package	Affected	Fixed in
iOS and iPadOS Product	< 26.7	26.7
	< 27	27
macOS Product	< 15.8	15.8
	< 26.7	26.7
	< 27	27

Details and references

CVSS 3.1: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Severity from: CISA (its enrichment of the CVE record)
Weakness: CWE-190

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