Apple Releases iOS 18.4.1 Update with Patches for Security Flaws and CarPlay Bug Fix

Apple has rolled out iOS 18.4.1 for iPhone users in a quiet but important update. While this latest release doesn’t bring any flashy new features, it is a critical security patch that Apple recommends all eligible users install as soon as possible. The update also fixes a CarPlay connectivity issue affecting some vehicles.

Here’s everything you need to know about the iOS 18.4.1 update.

Overview

Released on Wednesday, iOS 18.4.1 may seem minor on the surface, but under the hood, it patches two serious security vulnerabilities that could be exploited to target users. Apple, along with Google’s Threat Analysis Group, identified these flaws and has acted swiftly to fix them.

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The update is also available as iPadOS 18.4.1 for iPad users and applies similar fixes.

Security Fixes

One of the major issues fixed in this update lies within CoreAudio, Apple’s low-level API that handles audio processing. The flaw, labeled CVE-2025-31200, could allow an attacker to execute code through a maliciously crafted audio stream. Apple says it addressed the issue by improving bounds checking to prevent memory corruption.

This vulnerability was considered serious because attackers could exploit it by simply tricking a user into opening a media file with a hidden malicious payload.

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RPAC Exploit – CVE-2025-31201

The second vulnerability existed in the RPAC (Remote Participant Audio Control) framework. While designed to facilitate audio communication between users or apps, a flaw in the system allowed attackers with read and write access to bypass Pointer Authentication, a key iOS security mechanism. Apple patched the bug by removing the vulnerable part of the code entirely.

Apple has acknowledged that both vulnerabilities may have already been used in advanced, targeted attacks against specific individuals. That makes this update especially urgent for users in sensitive professions or those who may be high-profile targets.

CarPlay Fix

Beyond the security patches, iOS 18.4.1 also addresses a bug affecting wireless CarPlay connections. Some users reported that their iPhones failed to connect to CarPlay in certain vehicles. This update resolves the issue, helping restore seamless connectivity for drivers who rely on Apple’s in-car experience.

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Compatible Devices

The iOS 18.4.1 update is available for the following devices:

• iPhone XS and newer
• iPad Pro (all models)
• iPad Air (3rd generation and newer)
• iPad (6th generation and newer)
• iPad mini (5th generation and newer)

To install the update, simply go to Settings > General > Software Update and tap on Install Now.

Even though this release doesn’t come with new apps or user-facing features, it’s a necessary update for securing your device against known threats and ensuring smoother connectivity with CarPlay. If you haven’t already updated, now is a good time to do so.

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