A use after free issue was addressed with improved memory management. This issue is fixed in macOS Big Sur 11.1 Security Update 2020-001 Catalina Security Update 2020-007 Mojave macOS Big Sur 11.0.1 iOS 14.2 and iPadOS 14.2 watchOS 7.1 tvOS 14.2. Processing maliciously crafted web content may lead to code execution.