CVE-2026-43653

Received Received - Intake

Memory Corruption Denial-of-Service in Apple iOS and macOS

Publication date: 2026-05-11

Last updated on: 2026-05-11

Assigner: Apple Inc.

Description

The issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS Sonoma 14.8.7, macOS Tahoe 26.5, tvOS 26.5. An attacker on the local network may be able to cause a denial-of-service.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-05-11

Last Modified

2026-05-11

Generated

2026-07-11

AI Q&A

2026-05-12

EPSS Evaluated

2026-07-10

NVD

CVE-2026-43653

Affected Vendors & Products

Vendor	Product	Version / Range
apple	ios	18.7.9
apple	ipados	18.7.9
apple	macos_sonoma	14.8.7
apple	macos_tahoe	26.5
apple	tvos	26.5
apple	ios	26.5
apple	ipados	26.5

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability involves an issue with memory handling that has been improved in recent updates. It affects multiple Apple operating systems including iOS, iPadOS, macOS Sonoma, macOS Tahoe, and tvOS. An attacker on the local network may exploit this vulnerability to cause a denial-of-service condition.

Impact Analysis

The primary impact of this vulnerability is that an attacker on the local network could cause a denial-of-service, potentially disrupting the normal operation of affected Apple devices.

Mitigation Strategies

The issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS Sonoma 14.8.7, macOS Tahoe 26.5, and tvOS 26.5.

To mitigate this vulnerability, you should update your Apple devices to these fixed versions as soon as possible.

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