CVE-2026-43802

Analyzed Analyzed - Analysis Complete

Out-of-Bounds Write in macOS Sequoia

Publication date: 2026-07-27

Last updated on: 2026-07-28

Assigner: Apple Inc.

Description

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An app may be able to cause unexpected system termination.

CVSS Scores

EPSS Scores

Probability:
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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-2026-43802

EUVD

EUVD-2026-49550

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)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-787	The product writes data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This is an out-of-bounds write vulnerability caused by insufficient bounds checking. It allows an application to write data outside the intended memory area, potentially leading to system crashes or unexpected behavior.

Detection Guidance

This vulnerability is specific to Apple macOS versions and requires checking system version and installed updates. No direct detection commands are provided in the CVE details.

Impact Analysis

An attacker could exploit this to cause an app to crash or terminate the system unexpectedly. This may lead to data loss or denial of service if critical processes are affected.

Compliance Impact

The provided CVE data does not specify how this vulnerability impacts compliance with standards like GDPR or HIPAA. The issue involves an out-of-bounds write that could cause unexpected system termination, but no direct implications for regulatory compliance are mentioned.

Mitigation Strategies

Update to the latest patched versions of macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, or macOS Tahoe 26.6 to address the out-of-bounds write issue.

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