CVE-2026-43767

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Unexpected system termination in macOS due to memory handling issue

Publication date: 2026-07-27

Last updated on: 2026-07-30

Assigner: Apple Inc.

Description

The issue was addressed with improved memory handling. 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:
Percentile:

Meta Information

Published

2026-07-27

Last Modified

2026-07-30

Generated

2026-08-17

AI Q&A

2026-07-28

EPSS Evaluated

2026-08-15

NVD

CVE-2026-43767

EUVD

EUVD-2026-49429

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.
CWE-125	The product reads data past the end, or before the beginning, of the intended buffer.
CWE-119	The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

Attack-Flow Graph

Executive Summary

This vulnerability involves improved memory handling in Apple operating systems. It could allow an app to unexpectedly terminate the system.

Detection Guidance

This vulnerability is addressed in specific macOS updates. Detection involves checking your macOS version against the fixed versions: macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, or macOS Tahoe 26.6. Use the command 'sw_vers' in Terminal to check your current macOS version.

Impact Analysis

An attacker could exploit this to cause your system to crash unexpectedly, potentially leading to data loss or disruption of services.

Compliance Impact

The provided CVE data does not specify any direct impact on compliance with standards like GDPR or HIPAA. The vulnerability involves unexpected system termination due to memory handling issues, which may affect system availability but lacks details on data exposure or privacy implications.

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 memory handling issue.

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