CVE-2026-28973

Analyzed Analyzed - Analysis Complete

Integer Overflow in Apple iOS Leading to Sandbox Escape

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, watchOS 26.6. A malicious app may be able to break out of its sandbox.

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-2026-28973

EUVD

EUVD-2026-49511

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	watchos	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 issue that was fixed in recent updates to Apple's operating systems. An integer overflow occurs when a program attempts to store a value larger than the maximum limit of an integer type, potentially leading to unexpected behavior. In this case, the overflow could allow a malicious app to escape its sandbox, which is a security mechanism that restricts the app's access to system resources and other apps.

Detection Guidance

This vulnerability is specific to Apple operating systems and requires patching rather than direct detection via commands. Ensure your devices are updated to iOS 26.6, iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, or watchOS 26.6 or later to mitigate the risk.

Impact Analysis

If exploited, this vulnerability could allow a malicious app to break out of its sandbox. This means the app could access sensitive data or perform unauthorized actions on your device, potentially compromising your privacy and security.

Compliance Impact

The provided CVE data does not specify direct impacts on compliance with GDPR, HIPAA, or other standards. The vulnerability involves a malicious app potentially breaking out of its sandbox due to an integer overflow, which could lead to unauthorized data access or system compromise. Such risks may indirectly affect compliance by increasing exposure to data breaches or unauthorized processing, but no explicit details are provided.

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, or watchOS 26.6 to address the integer overflow issue.

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