CVE-2023-43000: 
Apple Safari vulnerability analysis and mitigation

A use-after-free vulnerability (CVE-2023-43000) was discovered in Apple's WebKit component, affecting macOS Ventura, iOS 16.6, iPadOS 16.6, and Safari 16.6. The vulnerability was disclosed and patched in July 2023, with the security advisory being published in November 2025. This security flaw affects the processing of web content in Apple's WebKit browser engine (Apple Support, NVD).

The vulnerability is classified as a use-after-free issue in WebKit, which was addressed through improved memory management implementation. The CVSS v3.1 base score for this vulnerability is 8.8 (HIGH) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. The vulnerability is tracked under CWE-416 (Use After Free) classification (NVD, Rapid7).

When exploited, this vulnerability can lead to memory corruption when processing maliciously crafted web content. The high CVSS score indicates that successful exploitation could result in significant impacts on confidentiality, integrity, and availability of the affected systems (Apple Support, NVD).

Apple has released security updates to address this vulnerability in multiple products: macOS Ventura 13.5, iOS 16.6, iPadOS 16.6, and Safari 16.6. Users are advised to update their systems to these versions or later to mitigate the vulnerability (Apple Support, Apple Support).