CVE-2026-86919

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Stack Overflow in Apple iOS and macOS

Publication date: 2026-10-20

Last updated on: 2026-10-21

Assigner: Apple Inc.

Description

A stack overflow was addressed with improved input validation. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, visionOS 27. An attacker with a paired Bluetooth device may be able to execute arbitrary code.

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Meta Information

Published

2026-10-20

Last Modified

2026-10-21

Generated

2026-11-09

AI Q&A

2026-10-20

EPSS Evaluated

2026-11-07

NVD

CVE-2026-86919

EUVD

EUVD-2026-104719

Affected Vendors & Products

Vendor	Product	Version / Range
Apple	iOS and iPadOS	0
Apple	iOS and iPadOS	0
Apple	macOS	0
Apple	macOS	0
Apple	macOS	0
Apple	visionOS	0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-121	A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

Attack-Flow Graph

Executive Summary

This vulnerability is a stack overflow caused by insufficient input validation in Apple's operating systems. An attacker with a paired Bluetooth device could exploit this to execute arbitrary code on affected devices.

Detection Guidance

Detection methods are not specified in the provided CVE details. The vulnerability involves a stack overflow in Bluetooth handling, fixed in iOS 26.7/27, iPadOS 26.7/27, macOS versions, and visionOS 27. Check for updated devices and review Apple's security advisories for potential detection tools.

Impact Analysis

If exploited, this vulnerability could allow an attacker to run malicious code on your device, potentially leading to unauthorized access, data theft, or installation of malware. It specifically requires the attacker to have a paired Bluetooth device.

Compliance Impact

The provided CVE data does not specify any direct impact on compliance with standards like GDPR or HIPAA. The vulnerability involves a stack overflow in Apple devices that could allow arbitrary code execution via a paired Bluetooth device, but no compliance implications are mentioned.

Mitigation Strategies

Update affected Apple devices to the latest versions: iOS 26.7 or later, iPadOS 26.7 or later, iOS 27 or later, iPadOS 27 or later, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, or visionOS 27. Disable Bluetooth pairing with untrusted devices until updates are applied.

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