CVE-2025-43238

Received Received - Intake

Integer Overflow in macOS Causes Potential System Termination

Publication date: 2026-04-02

Last updated on: 2026-04-03

Assigner: Apple Inc.

Description

An integer overflow was addressed with improved input validation. This issue is fixed in macOS Sequoia 15.6, macOS Sonoma 14.7.7, macOS Ventura 13.7.7. An app may be able to cause unexpected system termination.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-04-02

Last Modified

2026-04-03

Generated

2026-07-06

AI Q&A

2026-04-02

EPSS Evaluated

2026-07-05

NVD

CVE-2025-43238

EUVD

EUVD-2025-209196

Affected Vendors & Products

Vendor	Product	Version / Range
apple	macos	From 14.0 (inc) to 14.7.7 (exc)
apple	macos	From 15.0 (inc) to 15.6 (exc)
apple	macos	From 13.0 (inc) to 13.7.7 (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

Impact Analysis

This vulnerability can impact you by allowing an application to cause unexpected system termination on affected macOS versions. This could lead to system crashes, loss of unsaved data, and potential disruption of normal operations.

Mitigation Strategies

To mitigate this vulnerability, update your macOS system to one of the fixed versions: macOS Sequoia 15.6, macOS Sonoma 14.7.7, or macOS Ventura 13.7.7.

Applying these updates will address the integer overflow issue by improving input validation and prevent potential unexpected system termination caused by an app.

Executive Summary

This vulnerability is an integer overflow issue that was addressed by improving input validation in certain versions of macOS. An integer overflow occurs when a calculation exceeds the maximum size that can be stored in an integer variable, potentially leading to unexpected behavior.

In this case, the vulnerability could allow an application to cause unexpected system termination, meaning the system could crash or stop working properly.

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