CVE-2026-43805

Analyzed Analyzed - Analysis Complete

Race Condition in Apple iOS and macOS Leading to Kernel Memory Write

Publication date: 2026-07-27

Last updated on: 2026-07-28

Assigner: Apple Inc.

Description

A race condition was addressed with improved state handling. 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, watchOS 26.6. An app may be able to cause unexpected system termination or write kernel memory.

CVSS Scores

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Meta Information

Published

2026-07-27

Last Modified

2026-07-28

Generated

2026-08-17

AI Q&A

2026-07-28

EPSS Evaluated

2026-08-15

NVD

CVE-2026-43805

EUVD

EUVD-2026-49460

Affected Vendors & Products

Vendor	Product	Version / Range
apple	macos	From 14.0 (inc) to 14.8.8 (exc)
apple	macos	From 15.0 (inc) to 15.7.8 (exc)
apple	macos	From 26.0 (inc) to 26.6 (exc)
apple	ipados	to 26.6 (exc)
apple	iphone_os	to 26.6 (exc)
apple	watchos	to 26.6 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-362	The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

Attack-Flow Graph

Executive Summary

This is a race condition vulnerability where improper state handling could allow an app to cause unexpected system termination or write to kernel memory. It was fixed in specific versions of iOS, iPadOS, macOS, and watchOS.

Detection Guidance

This vulnerability is a race condition in Apple operating systems that could lead to kernel memory corruption or system termination. Detection requires checking system software versions against the fixed releases: iOS 26.6, iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, or watchOS 26.6. Use system update commands or check version numbers directly.

Impact Analysis

An attacker could exploit this to crash your device or corrupt kernel memory, potentially leading to data loss or unauthorized access. It requires a malicious app to be installed on your device.

Compliance Impact

The provided CVE data does not specify any direct impact on compliance with standards like GDPR or HIPAA. The vulnerability involves a race condition leading to potential system termination or kernel memory write, but no details are given about data exposure or privacy implications that would affect such regulations.

Mitigation Strategies

Update affected systems to the latest patched versions: iOS 26.6, iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, or watchOS 26.6.

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