CVE-2026-43667

Modified Modified - Updated After Analysis

Assertion Failure in iOS and iPadOS Leads to DoS

Publication date: 2026-08-17

Last updated on: 2026-08-25

Assigner: Apple Inc.

Description

A reachable assertion was addressed with improved input validation. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5 and iPadOS 26.5, macOS Tahoe 26.5, visionOS 26.5, watchOS 26.5. An attacker in a privileged network position may be able to cause a denial-of-service.

CVSS Scores

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Meta Information

Published

2026-08-17

Last Modified

2026-08-25

Generated

2026-09-07

AI Q&A

2026-08-18

EPSS Evaluated

2026-09-05

NVD

CVE-2026-43667

EUVD

EUVD-2026-60487

Affected Vendors & Products

Vendor	Product	Version / Range
apple	ipados	to 18.7.10 (exc)
apple	iphone_os	to 18.7.10 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-617	The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.

Attack-Flow Graph

Executive Summary

This is a denial-of-service vulnerability caused by a reachable assertion that was fixed with better input validation. An attacker in a privileged network position could exploit it to cause a system crash or unresponsiveness.

Detection Guidance

This vulnerability is specific to iOS and iPadOS versions prior to 18.7.10. Detection involves checking the installed OS version on affected devices. No specific commands are provided in the context to exploit or detect the issue directly.

Impact Analysis

If exploited, this vulnerability could make your iOS or iPadOS device crash or become unresponsive, disrupting normal use. It requires an attacker to be in a privileged network position, such as on the same network.

Compliance Impact

This vulnerability is a denial-of-service issue caused by a reachable assertion due to insufficient input validation. It does not directly impact data confidentiality, integrity, or privacy, which are key focus areas for GDPR and HIPAA compliance. However, a denial-of-service condition could indirectly affect compliance by disrupting services that process or store regulated data.

Mitigation Strategies

Update iOS to version 18.7.10 or later and iPadOS to version 18.7.10 or later to address the vulnerability.

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