CVE-2025-43503: 
Apple Safari vulnerability analysis and mitigation

CVE-2025-43503 is a security vulnerability affecting Apple's Safari browser and iOS/iPadOS systems. The vulnerability was discovered and reported by security researcher @RenwaX23, and was publicly disclosed on November 3, 2025. The issue involves an inconsistent user interface that could lead to user interface spoofing when visiting malicious websites. The vulnerability affects multiple Apple operating systems including iOS, iPadOS, watchOS, Safari, and visionOS (Apple Security).

The vulnerability is classified as a user interface inconsistency issue that was addressed with improved state management. According to CISA's assessment, it received a CVSS 3.1 Base Score of 4.3 (MEDIUM) with a vector string of CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N. The vulnerability is associated with CWE-290 (Authentication Bypass by Spoofing) (NVD Database).

When exploited, this vulnerability allows attackers to perform user interface spoofing through malicious websites. This could potentially lead to users being deceived about the interface they are interacting with, potentially compromising user trust and security (Apple Security).

Apple has addressed this vulnerability by implementing improved state management in their security updates. The fix is available in iOS 18.7.2, iPadOS 18.7.2, watchOS 26.1, Safari 26.1, and visionOS 26.1. Users are advised to update their devices to these versions to protect against potential exploitation (Apple Security).