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Apple Devices: Malicious App Can Crash System or Write to Memory
CVE-2026-20687
Summary
A issue was found in Apple's operating systems that could allow a malicious app to crash the device or write unauthorized data to memory. This is a security risk because it could lead to loss of data or system instability. To fix this, update to the latest versions of iOS, iPadOS, macOS, tvOS, or watchOS.
Original title
A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Sequoia 15.7.5, macOS Tahoe 26.4, tvOS 26....
Original description
A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Sequoia 15.7.5, macOS Tahoe 26.4, tvOS 26.4, watchOS 26.4. An app may be able to cause unexpected system termination or write kernel memory.
Published: 25 Mar 2026 · Updated: 25 Mar 2026 · First seen: 25 Mar 2026