CVE-2026-64736

Analyzed Analyzed - Analysis Complete

Out-of-Bounds Access in Apple iOS and macOS

Publication date: 2026-09-14

Last updated on: 2026-09-15

Assigner: Apple Inc.

Description

An out-of-bounds access issue was addressed with improved bounds checking. This issue is fixed in iOS 26.6.1 and iPadOS 26.6.1, macOS Sequoia 15.8, macOS Tahoe 26.6.2, tvOS 27, visionOS 27, watchOS 27. An app may be able to cause unexpected system termination or corrupt kernel memory.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-09-14

Last Modified

2026-09-15

Generated

2026-10-05

AI Q&A

2026-09-15

EPSS Evaluated

2026-10-04

NVD

CVE-2026-64736

Affected Vendors & Products

Vendor	Product	Version / Range
apple	ipados	to 26.6.1 (exc)
apple	iphone_os	to 26.6.1 (exc)
apple	macos	From 26.0 (inc) to 26.6.2 (exc)
apple	macos	From 15.0 (inc) to 15.8 (exc)
apple	visionos	to 27.0 (exc)
apple	watchos	to 27.0 (exc)
apple	tvos	to 27.0 (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.

Attack-Flow Graph

Executive Summary

This is an out-of-bounds access vulnerability where improper bounds checking allows an app to read or write memory outside intended limits. This could lead to system crashes or kernel memory corruption.

Detection Guidance

This vulnerability is specific to Apple operating systems and requires patching rather than direct detection via commands. Check your device's current OS version against the fixed versions listed (iOS 26.6.1, iPadOS 26.6.1, etc.). Use system update commands like 'softwareupdate --list' on macOS or 'Settings > General > Software Update' on iOS to verify.

Impact Analysis

An attacker could exploit this to cause unexpected system termination or corrupt kernel memory, potentially leading to data loss, instability, or unauthorized access on affected devices.

Compliance Impact

The provided CVE data does not specify direct impacts on compliance with standards like GDPR or HIPAA. The vulnerability involves potential kernel memory corruption or system termination, which could indirectly affect data integrity or availability. However, no explicit compliance implications are mentioned.

Mitigation Strategies

Immediately update affected Apple devices to the latest versions: iOS 26.6.1, iPadOS 26.6.1, macOS Sequoia 15.8, macOS Tahoe 26.6.2, tvOS 27, visionOS 27, or watchOS 27. Disable automatic loading of untrusted apps if possible until updates are applied.

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