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Vulnerability DatabaseCVE-2025-43343

CVE-2025-43343: 
Apple Safari vulnerability analysis and mitigation

Overview

CVE-2025-43343 is a security vulnerability affecting WebKit, discovered by an anonymous researcher and disclosed on September 15, 2025. The vulnerability impacts multiple Apple operating systems including tvOS 26, Safari 26, visionOS 26, watchOS 26, macOS Tahoe 26, iOS 26, and iPadOS 26. When processing maliciously crafted web content, this vulnerability could lead to an unexpected process crash (Apple Support, NVD).

Technical details

The vulnerability is related to memory handling issues in WebKit, Apple's browser engine. The issue was identified and tracked as WebKit Bugzilla: 296490. Apple addressed the vulnerability by improving memory handling mechanisms in the affected systems (Apple Support).

Impact

When successfully exploited, this vulnerability can cause an unexpected process crash when processing maliciously crafted web content. This affects various Apple devices running the affected operating systems (Apple Support).

Mitigation and workarounds

Apple has released security updates across multiple platforms to address this vulnerability. Users are advised to update to tvOS 26, Safari 26, visionOS 26, watchOS 26, macOS Tahoe 26, iOS 26, and iPadOS 26 to receive the fix (Apple Support).

Additional resources

Source: This report was generated using AI

Related Apple Safari vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2025-43343CRITICAL9.8
  • Apple SafariApple Safari
  • cpe:2.3:a:apple:safari
NoYesSep 15, 2025
CVE-2025-43342CRITICAL9.8
  • Apple SafariApple Safari
  • cpe:2.3:a:apple:safari
NoYesSep 15, 2025
CVE-2025-43356MEDIUM6.5
  • Apple SafariApple Safari
  • WebKit
NoYesSep 15, 2025
CVE-2025-43327MEDIUM6.5
  • Apple SafariApple Safari
  • cpe:2.3:a:apple:safari
NoYesSep 15, 2025
CVE-2025-43368MEDIUM4.3
  • Apple SafariApple Safari
  • WebKit Process Model
NoYesSep 15, 2025

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