CVE-2026-64772

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Out-of-Bounds Write in Apple iOS and macOS

Publication date: 2026-07-27

Last updated on: 2026-07-29

Assigner: Apple Inc.

Description

An out-of-bounds write issue was addressed with improved input validation. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, 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

2026-07-29

Generated

2026-08-17

AI Q&A

2026-07-28

EPSS Evaluated

2026-08-15

NVD

CVE-2026-64772

EUVD

EUVD-2026-49522

Affected Vendors & Products

Vendor	Product	Version / Range
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 input validation. It allows a remote attacker to write data outside the intended memory buffer, potentially corrupting heap memory or causing applications to crash.

Detection Guidance

This vulnerability is specific to Apple operating systems and requires updating to patched versions to resolve. No direct detection commands are provided in the CVE details. Ensure your devices are running the latest versions: iOS 26.6, iPadOS 26.6, macOS Sequoia 15.7.8, macOS Tahoe 26.6, tvOS 26.6, or visionOS 26.6.

Impact Analysis

An attacker could exploit this to crash applications on affected devices or corrupt memory, leading to unexpected behavior. This may include data corruption or denial of service for critical apps.

Compliance Impact

The provided CVE data does not specify any direct impact on compliance with standards like GDPR or HIPAA. The vulnerability involves an out-of-bounds write issue that could lead to application termination or heap corruption, but no details are given about data exposure or privacy implications.

Mitigation Strategies

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

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