iOS 18.3 Security Update

What iOS 18.3 Fixes

iOS 18.3 and iPadOS 18.3, released January 27, 2025, fixes 40 vulnerabilities in 22 parts of the system, according to Apple's security advisory.

Apple does not say that any of them were exploited before the fix. That makes iOS 18.3 a routine security update: worth installing soon, not an emergency.

It has since been superseded: the newest security release for iOS 18 is iOS 18.7.11 and iPadOS 18.7.11, from October 26, 2026, which includes these fixes.

Grouped by us from the impact Apple gives for each fix; the impact lines below are Apple's own.

Which Devices Get iOS 18.3

Apple lists iOS 18.3 and iPadOS 18.3 for: iPhone XS and later, iPad Pro 13-inch, iPad Pro 12.9-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.

How to Install iOS 18.3

On the iPhone, open Settings → General → Software Update. If more than one update is offered, the one with the higher version number is the current release; the other is for people who want to stay on the previous major version.

Security fixes are cumulative: any later release for the same version includes these as well, so if you are already past iOS 18.3 there is nothing to do.

Every Fix in iOS 18.3

All 40 CVEs in Apple's advisory, the most serious kinds first. Each entry is the part of the system affected, Apple's description of the impact and the fix, and the CVE ID.

• Kernel

  An app may be able to execute arbitrary code with kernel privileges

  A validation issue was addressed with improved logic.

  CVE-2025-24159

• CoreMedia

  A malicious application may be able to elevate privileges. Apple is aware of a report that this issue may have been actively exploited against versions of iOS before iOS 17.2.

  A use after free issue was addressed with improved memory management.

  CVE-2025-24085

• Kernel

  A malicious app may be able to gain root privileges

  A permissions issue was addressed with additional restrictions.

  CVE-2025-24107

• WebContentFilter

  An attacker may be able to cause unexpected system termination or corrupt kernel memory

  An out-of-bounds write was addressed with improved input validation.

  CVE-2025-24154

• Accessibility

  An attacker with physical access to an unlocked device may be able to access Photos while the app is locked

  An authentication issue was addressed with improved state management.

  CVE-2025-24141

• Kernel

  An app may be able to leak sensitive kernel state

  An information disclosure issue was addressed by removing the vulnerable code.

  CVE-2025-24144

• Safari

  Photos in the Hidden Photos Album may be viewed without authentication

  A logic issue was addressed with improved checks.

  CVE-2025-31185

• Safari

  Visiting a malicious website may lead to address bar spoofing

  The issue was addressed by adding additional logic.

  CVE-2025-24128

• Safari

  Visiting a malicious website may lead to user interface spoofing

  The issue was addressed with improved UI.

  CVE-2025-24113

• AirPlay

  An attacker on the local network may be able to corrupt process memory

  An input validation issue was addressed.

  CVE-2025-24126

• AirPlay

  An attacker on the local network may cause an unexpected app termination

  A type confusion issue was addressed with improved checks.

  CVE-2025-24129

• AirPlay

  An attacker on the local network may be able to cause a denial-of-service

  The issue was addressed with improved memory handling.

  CVE-2025-24131

• AirPlay

  An attacker on the local network may be able to cause a denial-of-service

  A null pointer dereference was addressed with improved input validation.

  CVE-2025-24177 CVE-2025-24179

• AirPlay

  An attacker on the local network may corrupt process memory

  A type confusion issue was addressed with improved checks.

  CVE-2025-24137

• ARKit

  Parsing a file may lead to an unexpected app termination

  The issue was addressed with improved checks.

  CVE-2025-24127

• CoreAudio

  Parsing a file may lead to an unexpected app termination

  The issue was addressed with improved checks.

  CVE-2025-24160 CVE-2025-24161 CVE-2025-24163

• CoreMedia

  Parsing a file may lead to an unexpected app termination

  The issue was addressed with improved checks.

  CVE-2025-24123 CVE-2025-24124

• CoreMedia Playback

  An app may be able to cause unexpected system termination

  The issue was addressed with improved memory handling.

  CVE-2025-24184

• Display

  An app may be able to cause unexpected system termination

  A memory corruption issue was addressed with improved state management.

  CVE-2025-24111

• ImageIO

  Processing an image may lead to a denial-of-service

  The issue was addressed with improved memory handling.

  CVE-2025-24086

• Libnotify

  An app may be able to cause a denial-of-service

  An app could impersonate system notifications. Sensitive notifications now require restricted entitlements.

  CVE-2025-24091

• libxslt

  Processing maliciously crafted web content may lead to an unexpected process crash

  This is a vulnerability in open source code and Apple Software is among the affected projects. The CVE-ID was assigned by a third party. Learn more about the issue and CVE-ID at cve.org .

  CVE-2024-55549 CVE-2025-24855

• WebKit

  Processing maliciously crafted web content may lead to memory corruption

  The issue was addressed with improved checks.

  CVE-2025-24189

• WebKit

  Processing web content may lead to a denial-of-service

  The issue was addressed with improved memory handling.

  CVE-2025-24158

• WebKit

  Processing maliciously crafted web content may lead to an unexpected process crash

  This issue was addressed through improved state management.

  CVE-2025-24162

• Icons

  An app may be able to enumerate a user's installed apps

  A permissions issue was addressed with additional restrictions.

  CVE-2025-24089 CVE-2025-24090

• LaunchServices

  An app may be able to fingerprint the user

  This issue was addressed with improved redaction of sensitive information.

  CVE-2025-24117

• Managed Configuration

  Restoring a maliciously crafted backup file may lead to modification of protected system files

  This issue was addressed with improved handling of symlinks.

  CVE-2025-24104

• PackageKit

  An app may be able to modify protected parts of the file system

  A permissions issue was addressed with additional restrictions.

  CVE-2025-31262

• Passkeys

  An app may gain unauthorized access to Bluetooth

  This is a vulnerability in open source code and Apple Software is among the affected projects. The CVE-ID was assigned by a third party. Learn more about the issue and CVE-ID at cve.org .

  CVE-2024-9956

• SceneKit

  Parsing a file may lead to disclosure of user information

  An out-of-bounds read was addressed with improved bounds checking.

  CVE-2025-24149

• Time Zone

  An app may be able to view a contact's phone number in system logs

  A privacy issue was addressed with improved private data redaction for log entries.

  CVE-2025-24145

• WebKit

  A maliciously crafted webpage may be able to fingerprint the user

  The issue was addressed with improved access restrictions to the file system.

  CVE-2025-24143

• WebKit Web Inspector

  Copying a URL from Web Inspector may lead to command injection

  A privacy issue was addressed with improved handling of files.

  CVE-2025-24150

iOS 18 Security Release History

iOS 18.3 in context: the security releases Apple has published for iOS 18, newest first, with the number of fixes each carried.

The Same Fixes Elsewhere

Apple ships most fixes to every platform that shares the code, and to older versions still under support. These releases close at least one of the same CVEs:

Frequently Asked Questions