CVE-2026-64774

Analyzed Analyzed - Analysis Complete

Integer Overflow in Apple iOS and macOS Systems

Publication date: 2026-07-27

Last updated on: 2026-07-28

Assigner: Apple Inc.

Description

An integer overflow was addressed with improved input validation. 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

2026-07-28

Generated

2026-08-17

AI Q&A

2026-07-28

EPSS Evaluated

2026-08-15

NVD

CVE-2026-64774

EUVD

EUVD-2026-49483

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-190	The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

Attack-Flow Graph

Executive Summary

This vulnerability is an integer overflow caused by insufficient input validation. It can lead to unexpected application termination or heap corruption, potentially allowing a remote attacker to cause system instability.

Detection Guidance

This vulnerability is specific to Apple operating systems and requires checking for outdated versions. No direct detection commands are provided in the CVE details. 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 impact includes unexpected crashes of applications or system services, potential data corruption, and possible remote code execution if exploited. Users of affected Apple devices may experience disruptions.

Compliance Impact

The provided CVE data does not specify direct impacts on compliance with standards like GDPR or HIPAA. The vulnerability involves an integer overflow leading to potential application termination or heap corruption, which could indirectly affect data integrity or availability. However, explicit compliance implications are not detailed in the given context.

Mitigation Strategies

Update affected systems 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, or visionOS 26.6.

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