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iOS 18.4.1 Update Released: Fixes Critical Zero-Day Bugs & CarPlay Glitch – Why You Should Update Now
Apple has released iOS 18.4.1, a significant security update that fixes common CarPlay connectivity issues and fixes two zero-day vulnerabilities that were used in targeted attacks. This emergency patch, which was made available on April 16, 2025, demonstrates Apple’s quick reaction to serious threats. The main fixes, security ramifications, and precautions to protect your device are detailed below.
Key Highlights of iOS 18.4.1
1. Patches for Two Active Zero-Day Vulnerabilities
Apple’s official security documentation reveals that iOS 18.4.1 addresses two critical zero-day vulnerabilities:Apple Support
- CoreAudio Vulnerability (CVE-2025-31200): This flaw could allow maliciously crafted audio files to execute arbitrary code on the device. Apple acknowledges reports of this vulnerability being exploited in sophisticated attacks targeting specific individuals.Apple Support+1Indiatimes+1
- RPAC Vulnerability (CVE-2025-31201): This issue could enable attackers with arbitrary read and write capabilities to bypass Pointer Authentication, a key security feature. Apple has addressed this by removing the vulnerable code.
These vulnerabilities were reportedly exploited in targeted attacks, underscoring the importance of updating promptly. Apple Support
2. Resolution of Wireless CarPlay Connectivity Issues
iOS 18.4.1 also tackles a rare but impactful bug that prevented wireless CarPlay connections in certain vehicles. Users had reported issues such as CarPlay failing to initiate, disconnecting unexpectedly, or not being recognized by the vehicle’s system. TechRadar
Apple’s release notes confirm that this update addresses the issue, enhancing the reliability of wireless CarPlay connections. Forbes
Additional Fixes and User Reports
Beyond the headline fixes, iOS 18.4.1 includes several other improvements:Reddit+1MacRumors Forums+1
- Battery Performance: Some users reported rapid battery drain after updating to iOS 18.4.1. Apple suggests that this may be due to background processes post-update and should stabilize within 24–48 hours. SimplyMac
- Face ID Glitches: Intermittent Face ID failures have been noted, particularly on iPhone 12 and newer models. Restarting the device or resetting Face ID settings may alleviate the issue.SimplyMac
- App Notification Delays: Delays in receiving notifications from apps like WhatsApp and Telegram have been observed. Ensuring that Background App Refresh is enabled for these apps may help.SimplyMac
- Safari Copy/Paste Bug: Some users experienced issues with copying and pasting text on certain websites. Clearing Safari’s cache and website data can resolve this problem.SimplyMac
How to Update to iOS 18.4.1
To install the update:
- Open the Settings app on your iPhone.
- Navigate to General > Software Update.
- If iOS 18.4.1 is available, tap Download and Install.SimplyMac+1Apple World Today+1Apple World Today+2Indiatimes+2MacRumors Forums+2
Ensure your device is connected to Wi-Fi and has sufficient battery life or is plugged into a power source during the update process.
Compatibility
iOS 18.4.1 is compatible with the following devices:
- iPhone XS and later models
- iPad Pro 13-inch, iPad Pro 11-inch (1st generation and later)
- iPad Air (3rd generation and later)
- iPad (7th generation and later)
- iPad mini (5th generation and later)Apple Support+1SimplyMac+1
Conclusion
The iOS 18.4.1 update is a critical release that addresses serious security vulnerabilities and resolves a significant CarPlay connectivity issue. All users with compatible devices are strongly encouraged to update promptly to ensure their devices remain secure and function optimally.
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