CVE-2026-43750

Analyzed Analyzed - Analysis Complete

Buffer Overflow in macOS with Arbitrary Code Execution

Publication date: 2026-07-27

Last updated on: 2026-07-29

Assigner: Apple Inc.

Description

A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An app may be able to execute arbitrary code out of its sandbox or with certain elevated privileges.

CVSS Scores

EPSS Scores

Probability:
Percentile:

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-2026-43750

EUVD

EUVD-2026-49547

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)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-120	The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.

Attack-Flow Graph

Executive Summary

This vulnerability is a buffer overflow issue caused by insufficient bounds checking. It allows an application to execute arbitrary code outside its sandbox or with elevated privileges. The flaw exists in multiple macOS versions including Sequoia, Sonoma, and Tahoe.

Detection Guidance

This vulnerability requires checking the installed macOS version against the patched versions mentioned. Use the command 'sw_vers' to check your macOS version. Compare it with Sequoia 15.7.8, Sonoma 14.8.8, or Tahoe 26.6. If your version is older, the system is vulnerable.

Impact Analysis

An attacker could exploit this to run malicious code on your system, potentially gaining control over your device or accessing sensitive data. It may allow bypassing security restrictions like sandboxing, increasing risk of data theft or system compromise.

Compliance Impact

The provided CVE data does not specify direct impacts on compliance with standards like GDPR or HIPAA. The vulnerability involves a buffer overflow that could allow arbitrary code execution or privilege escalation, which may indirectly affect compliance by compromising data integrity or confidentiality.

Mitigation Strategies

Update your macOS to the latest patched versions: Sequoia 15.7.8, Sonoma 14.8.8, or Tahoe 26.6 to address the buffer overflow issue.

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