CVE-2026-64769

Analyzed Analyzed - Analysis Complete

Out-of-Bounds Write in Apple iOS and macOS

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 iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6. A remote attacker may be able to cause unexpected application termination or heap corruption.

CVSS Scores

EPSS 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-2026-64769

EUVD

EUVD-2026-49490

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	tvos	to 26.6 (exc)
apple	visionos	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. A remote attacker could exploit it to write data outside the intended memory area, potentially leading to heap corruption or unexpected application termination.

Detection Guidance

This vulnerability is specific to Apple operating systems and requires checking for outdated versions. No direct detection commands are provided in the context. Ensure your iOS, iPadOS, macOS, tvOS, or visionOS devices are updated to the fixed versions mentioned (iOS 26.6, macOS Sequoia 15.7.8, etc.).

Impact Analysis

The vulnerability may allow a remote attacker to crash applications or corrupt memory on affected devices. This could disrupt normal operations or enable further malicious activities depending on the compromised system.

Compliance Impact

This vulnerability may lead to heap corruption or unexpected application termination, which could result in unauthorized data access or loss. Such issues could potentially violate data protection requirements under GDPR or HIPAA if exploited to access or manipulate sensitive information.

Mitigation Strategies

Update affected Apple devices to the latest versions: iOS 26.6, iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, tvOS 26.6, or visionOS 26.6 to address the out-of-bounds write issue.

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