CVE-2026-86879

Received Received - Intake

Denial-of-Service in iOS and iPadOS

Publication date: 2026-09-14

Last updated on: 2026-09-14

Assigner: Apple Inc.

Description

A denial-of-service issue was addressed with improved input validation. This issue is fixed in iOS 27 and iPadOS 27. A remote attacker may be able to cause a denial-of-service.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-09-14

Last Modified

2026-09-14

Generated

2026-09-15

AI Q&A

2026-09-15

EPSS Evaluated

N/A

NVD

CVE-2026-86879

Affected Vendors & Products

Vendor	Product	Version / Range
apple	ios	27
apple	ipad_os	27

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-20	The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Attack-Flow Graph

Executive Summary

This is a denial-of-service vulnerability caused by insufficient input validation. A remote attacker could exploit it to crash the system by sending maliciously crafted input, rendering the service unavailable.

Detection Guidance

Detection methods are not specified in the provided CVE details. Monitor for unusual system behavior or crashes, particularly after network input events. Check for iOS/iPadOS version 27 or later to confirm patch status.

Impact Analysis

If exploited, this vulnerability could cause your iOS or iPadOS device to become unresponsive or crash, leading to service disruption. Users may experience device slowdowns or forced restarts.

Mitigation Strategies

Update affected devices to iOS 27 or iPadOS 27 immediately to address the denial-of-service issue. Ensure all systems running Apple iOS or iPadOS are patched to prevent exploitation.

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