CVE-2026-86950
Analyzed Analyzed - Analysis Complete

Out-of-Bounds Write in Apple iOS and macOS

Publication date: 2026-09-28

Last updated on: 2026-10-08

Assigner: Apple Inc.

Description
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 26.7.1 and iPadOS 26.7.1, macOS Sequoia 15.8.1, macOS Tahoe 26.7.1. Processing a maliciously crafted file may lead to arbitrary code execution. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on versions of iOS before iOS 27.

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Meta Information

Published
2026-09-28
Last Modified
2026-10-08
Generated
2026-10-19
AI Q&A
2026-09-28
EPSS Evaluated
2026-10-18
NVD
CVE-2026-86950
EUVD
EUVD-2026-88445

Affected Vendors & Products

Showing 4 associated CPEs
Vendor Product Version / Range
apple iphone_os to 26.7.1 (exc)
apple macos to 15.8.1 (exc)
apple ipados to 26.7.1 (exc)
apple macos From 26.0 (inc) to 26.7.1 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-787 The product writes data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

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Executive Summary

CVE-2026-86950 is an out-of-bounds write vulnerability in Apple's CoreGraphics framework. It allows processing a maliciously crafted file to execute arbitrary code on affected systems. The issue was fixed by improving bounds checking in iOS 26.7.1, iPadOS 26.7.1, macOS Sequoia 15.8.1, and macOS Tahoe 26.7.1.

Detection Guidance

This vulnerability is specific to Apple's CoreGraphics component and is addressed by updating to iOS 26.7.1, iPadOS 26.7.1, macOS Sequoia 15.8.1, or macOS Tahoe 26.7.1. Detection involves checking your current software versions against these patched releases.

Impact Analysis

If exploited, this vulnerability could allow attackers to execute arbitrary code on your device by tricking you into opening a specially crafted file. This could lead to unauthorized access, data theft, or installation of malware. Apple notes it may have been used in highly targeted attacks against specific individuals.

Compliance Impact

This vulnerability could lead to arbitrary code execution through malicious file processing, potentially enabling unauthorized access to sensitive data. Such risks may impact compliance with GDPR (data protection) and HIPAA (health information privacy) by increasing the likelihood of data breaches or unauthorized disclosures.

Mitigation Strategies
  • Update iOS to version 26.7.1 or later if you are using an affected device.
  • Update iPadOS to version 26.7.1 or later for supported iPad models.
  • Update macOS Sequoia to version 15.8.1 or macOS Tahoe to version 26.7.1.
  • Avoid opening files from untrusted sources until the update is applied.

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