BaseFortify

Publication date: 2025-11-04

Last updated on: 2026-04-02

Assigner: Apple Inc.

Description

This issue was addressed through improved state management. This issue is fixed in Safari 26.1, iOS 26.1 and iPadOS 26.1, macOS Tahoe 26.1, tvOS 26.1, visionOS 26.1. Processing maliciously crafted web content may lead to an unexpected process crash.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2025-11-04

Last Modified

2026-04-02

Generated

2026-07-06

AI Q&A

2025-11-04

EPSS Evaluated

2026-07-05

NVD

CVE-2025-43427

Affected Vendors & Products

Vendor	Product	Version / Range
apple	safari	to 26.1 (exc)
apple	ipados	to 26.1 (exc)
apple	iphone_os	to 26.1 (exc)
apple	tvos	to 26.1 (exc)
apple	visionos	to 26.1 (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.
CWE-703	The product does not properly anticipate or handle exceptional conditions that rarely occur during normal operation of the product.

Attack-Flow Graph

Executive Summary

This vulnerability involves processing maliciously crafted web content that may cause an unexpected process crash. It was addressed by improving state management in affected Apple operating systems and software.

Impact Analysis

The vulnerability can lead to an unexpected process crash when malicious web content is processed, potentially disrupting normal operation of the affected device or software.

Mitigation Strategies

The immediate step to mitigate this vulnerability is to update affected Apple devices and software to version 26.1 or later, including iOS, iPadOS, tvOS, Safari, and visionOS.

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