AppleCVE-2026-84548

Apple macOS: integer overflow

CVE-2026-84548 · Published Sep 14, 2026 · updated Sep 17, 2026

High7.1

Fix: upgrade to 15.8 or later (3 fixed versions below)

An integer overflow was addressed with improved input validation. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. Processing a maliciously crafted document may lead to an out-of-bounds read.

Affected versions

Package	Affected	Fixed in
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:N/UI:R/S:U/C:H/I:N/A:H
Severity from: NVD
Weakness: CWE-190

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