A memory corruption issue was addressed with improved bounds checking

iOS 18.4.1 and iPadOS 18.4.1
Released April 16, 2025

CoreAudio
Available for: iPhone XS and later, iPad Pro 13-inch, iPad Pro 13.9-inch 3rd generation and later, iPad Pro 11-inch 1st generation and later, iPad Air 3rd generation and later, iPad 7th generation and later, and iPad mini 5th generation and later

Impact: Processing an audio stream in a maliciously crafted media file may result in code execution. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on iOS.

Description: A memory corruption issue was addressed with improved bounds checking.
CVE-2025-31200: Apple and Google Threat Analysis Group

RPAC
Available for: iPhone XS and later, iPad Pro 13-inch, iPad Pro 13.9-inch 3rd generation and later, iPad Pro 11-inch 1st generation and later, iPad Air 3rd generation and later, iPad 7th generation and later, and iPad mini 5th generation and later

Impact: An attacker with arbitrary read and write capability may be able to bypass Pointer Authentication. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on iOS.

Description: This issue was addressed by removing the vulnerable code.
CVE-2025-31201: Apple