CVE-2026-64770

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. A remote attacker may be able to cause unexpected application termination or heap corruption.

CVSS Scores

EPSS Scores

Probability:
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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-2026-64770

EUVD

EUVD-2026-49560

Affected Vendors & Products

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

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

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 intended memory regions, potentially leading to heap corruption or unexpected application termination.

Detection Guidance

This vulnerability is specific to Apple operating systems and requires checking installed versions against patched releases. For iOS/iPadOS, check Settings > General > Software Update. For macOS, go to About This Mac > Software Update. No direct command-line detection is provided in the context.

Impact Analysis

An attacker could exploit this to crash applications or corrupt memory, which might allow arbitrary code execution. This could lead to data loss, system instability, or unauthorized access depending on the affected application.

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. Enable automatic updates if available.

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