CVE-2025-43342: 
Apple Safari vulnerability analysis and mitigation

CVE-2025-43342 is a correctness issue in WebKit that affects multiple Apple operating systems including iOS 26, iPadOS 26, macOS Tahoe 26, tvOS 26, Safari 26, visionOS 26, and watchOS 26, as well as iOS 18.7 and iPadOS 18.7. The vulnerability was discovered by an anonymous researcher and disclosed on September 15, 2025 (Apple Support, NVD).

The vulnerability is a correctness issue in WebKit that was addressed with improved checks. When processing maliciously crafted web content, this vulnerability could lead to an unexpected process crash. The issue was tracked in WebKit Bugzilla under ID 296042 (Apple Support).

When exploited, this vulnerability can cause an unexpected process crash when processing maliciously crafted web content. This affects the stability of the system and could potentially lead to denial of service conditions (NVD).

Apple has addressed this vulnerability by implementing improved checks in the affected operating systems. Users are advised to update to the latest versions of their respective operating systems: iOS 26, iPadOS 26, macOS Tahoe 26, tvOS 26, Safari 26, visionOS 26, watchOS 26, or iOS 18.7 and iPadOS 18.7 (Apple Support).