CVE-2026-43813

Analyzed Analyzed - Analysis Complete

Code Signing Bypass in Apple iOS and macOS

Publication date: 2026-07-27

Last updated on: 2026-07-28

Assigner: Apple Inc.

Description

A validation issue was addressed with improved input sanitization. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6. A maliciously crafted app may be able to bypass code signing enforcement.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-07-27

Last Modified

2026-07-28

Generated

2026-08-17

AI Q&A

2026-07-28

EPSS Evaluated

2026-08-15

NVD

CVE-2026-43813

EUVD

EUVD-2026-49457

Affected Vendors & Products

Vendor	Product	Version / Range
apple	macos	From 26.0 (inc) to 26.6 (exc)
apple	ipados	to 26.6 (exc)
apple	iphone_os	to 26.6 (exc)
apple	tvos	to 26.6 (exc)
apple	visionos	to 26.6 (exc)
apple	watchos	to 26.6 (exc)

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 vulnerability is a validation issue caused by insufficient input sanitization. It allows a maliciously crafted app to bypass code signing enforcement, potentially enabling unauthorized code execution on affected devices.

Detection Guidance

This vulnerability is specific to Apple operating systems and requires checking the installed version against the patched releases. No direct detection commands are provided in the CVE details. Verify if your device is running iOS 26.6, iPadOS 26.6, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, or watchOS 26.6 or later.

Impact Analysis

If exploited, this vulnerability could allow attackers to run unauthorized or malicious software on your device. This may lead to data theft, unauthorized access to sensitive information, or further compromise of your system.

Compliance Impact

The vulnerability allows a maliciously crafted app to bypass code signing enforcement, which could lead to unauthorized access or execution of untrusted code. This may impact compliance with standards like GDPR (data protection) or HIPAA (health data privacy) by increasing the risk of data breaches or unauthorized processing of sensitive information.

Mitigation Strategies

Update affected Apple devices to the latest versions (iOS 26.6, iPadOS 26.6, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6) to address the validation issue.

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