CVE-2026-43818

Received Received - Intake

Integer Overflow in iOS and macOS Image Processing

Publication date: 2026-07-27

Last updated on: 2026-07-27

Assigner: Apple Inc.

Description

An integer overflow was addressed with improved input validation. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. Processing a maliciously crafted image may lead to arbitrary code execution.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-07-27

Last Modified

2026-07-27

Generated

2026-07-28

AI Q&A

2026-07-28

EPSS Evaluated

N/A

NVD

CVE-2026-43818

EUVD

EUVD-2026-49544

Affected Vendors & Products

Vendor	Product	Version / Range
apple	ios	26.6
apple	ipad_os	26.6
apple	macos_sequoia	15.7.8
apple	macos_sonoma	14.8.8
apple	macos_tahoe	26.6

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability is an integer overflow caused by insufficient input validation. When processing a specially crafted image, the flaw may allow arbitrary code execution on affected devices.

Impact Analysis

If exploited, this vulnerability could let attackers run malicious code on your device by tricking you into opening a maliciously crafted image. This could lead to unauthorized access or control of your device.

Mitigation Strategies

Update affected systems to the latest patched versions: iOS 26.6 or later, iPadOS 26.6 or later, macOS Sequoia 15.7.8 or later, macOS Sonoma 14.8.8 or later, and macOS Tahoe 26.6 or later. Avoid processing untrusted or maliciously crafted images until updates are applied.

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