CVE-2026-64764
Received Received - Intake

Out-of-Bounds Write in Apple iOS and macOS

Publication date: 2026-07-27

Last updated on: 2026-07-27

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, watchOS 26.6. Processing a maliciously crafted file may lead to unexpected app termination or arbitrary code execution.

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Meta Information

Published
2026-07-27
Last Modified
2026-07-27
Generated
2026-07-28
AI Q&A
2026-07-28
EPSS Evaluated
N/A
NVD
CVE-2026-64764
EUVD
EUVD-2026-49518

Affected Vendors & Products

Showing 8 associated CPEs
Vendor Product Version / Range
apple ios 26.6
apple ipad_os 26.6
apple macos_sequoia 15.7.8
apple macos_sonoma 14.8.8
apple macos_tahoe 26.6
apple tv_os 26.6
apple vision_os 26.6
apple watch_os 26.6

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This is an out-of-bounds write vulnerability caused by insufficient bounds checking. Processing a maliciously crafted file could allow an attacker to execute arbitrary code or terminate apps unexpectedly.

Detection Guidance

This vulnerability is specific to Apple operating systems and requires checking installed versions against patched releases. For iOS/iPadOS, macOS, tvOS, visionOS, and watchOS, verify if your system is running versions iOS 26.6, iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, or watchOS 26.6 or later. Use system update commands like 'softwareupdate --list' on macOS or check Settings > General > Software Update on iOS/iPadOS.

Impact Analysis

If exploited, this flaw could let attackers run malicious code on your device, potentially stealing data, installing malware, or crashing apps. It affects multiple Apple platforms including iOS, macOS, and watchOS.

Mitigation Strategies

Immediately update all Apple devices 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, tvOS 26.6, visionOS 26.6, or watchOS 26.6. Avoid opening untrusted files until updates are applied. Enable automatic updates where possible to prevent future vulnerabilities.

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