iOS 18.4 Security Update

What iOS 18.4 Fixes

iOS 18.4 and iPadOS 18.4, released March 31, 2025, fixes 78 vulnerabilities in 44 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 18.4 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It has since been superseded: the newest security release for iOS 18 is iOS 18.7.11 and iPadOS 18.7.11, from October 26, 2026, which includes these fixes.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 18.4

Apple lists iOS 18.4 and iPadOS 18.4 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 18.4

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 18.4 there is nothing to do.

Every Fix in iOS 18.4

All 78 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.

• Audio

  Processing a maliciously crafted file may lead to arbitrary code execution

  The issue was addressed with improved memory handling.

  CVE-2025-24243

• Calendar

  An app may be able to break out of its sandbox

  A path handling issue was addressed with improved validation.

  CVE-2025-30429

• Calendar

  An app may be able to break out of its sandbox

  This issue was addressed with improved checks.

  CVE-2025-24212

• DiskArbitration

  An app may be able to gain root privileges

  A parsing issue in the handling of directory paths was addressed with improved path validation.

  CVE-2025-30456

• IOGPUFamily

  An app may be able to cause unexpected system termination or write kernel memory

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

  CVE-2025-24257

• libxpc

  An app may be able to break out of its sandbox

  This issue was addressed through improved state management.

  CVE-2025-24178

• libxpc

  An app may be able to gain elevated privileges

  A logic issue was addressed with improved checks.

  CVE-2025-24238

• Power Services

  An app may be able to break out of its sandbox

  This issue was addressed with additional entitlement checks.

  CVE-2025-24173

• Accessibility

  An app may be able to access sensitive user data

  A logging issue was addressed with improved data redaction.

  CVE-2025-24202

• Accounts

  Sensitive keychain data may be accessible from an iOS backup

  This issue was addressed with improved data access restriction.

  CVE-2025-24221

• AirPlay

  An attacker on the local network may be able to leak sensitive user information

  This issue was addressed by removing the vulnerable code.

  CVE-2025-24270

• AirPlay

  An attacker on the local network may be able to bypass authentication policy

  An authentication issue was addressed with improved state management.

  CVE-2025-24206

• Audio

  An app may be able to bypass ASLR

  An out-of-bounds access issue was addressed with improved bounds checking.

  CVE-2025-43205

• Authentication Services

  Password autofill may fill in passwords after failing authentication

  This issue was addressed through improved state management.

  CVE-2025-30430

• Authentication Services

  A malicious website may be able to claim WebAuthn credentials from another website that shares a registrable suffix

  The issue was addressed with improved input validation.

  CVE-2025-24180

• CoreMedia Playback

  A malicious app may be able to access private information

  A path handling issue was addressed with improved validation.

  CVE-2025-30454

• CoreServices

  An app may be able to access sensitive user data

  This issue was addressed through improved state management.

  CVE-2025-31191

• Focus

  An attacker with physical access to a locked device may be able to view sensitive user information

  The issue was addressed with improved checks.

  CVE-2025-30439

• Focus

  An app may be able to access sensitive user data

  A logging issue was addressed with improved data redaction.

  CVE-2025-24283

• Foundation

  An app may be able to access sensitive user data

  The issue was resolved by sanitizing logging

  CVE-2025-30447

• Handoff

  An app may be able to access sensitive user data

  The issue was addressed with improved restriction of data container access.

  CVE-2025-30463

• Logging

  An app may be able to access sensitive user data

  A logging issue was addressed with improved data redaction.

  CVE-2025-31199

• Maps

  An app may be able to read sensitive location information

  A path handling issue was addressed with improved logic.

  CVE-2025-30470

• MediaRemote

  An app may be able to leak sensitive user information

  An authorization issue was addressed with improved state management.

  CVE-2025-46308

• MobileLockdown

  An attacker with a USB-C connection to an unlocked device may be able to programmatically access photos

  This issue was addressed with improved authentication.

  CVE-2025-24193

• Photos

  Photos in the Hidden Photos Album may be viewed without authentication

  This issue was addressed through improved state management.

  CVE-2025-30428

• Photos

  A person with physical access to an iOS device may be able to access photos from the lock screen

  This issue was addressed through improved state management.

  CVE-2025-30469

• RepairKit

  An app may be able to bypass Privacy preferences

  This issue was addressed with additional entitlement checks.

  CVE-2025-24095

• Safari

  A website may be able to bypass Same Origin Policy

  This issue was addressed through improved state management.

  CVE-2025-30466

• Share Sheet

  A malicious app may be able to dismiss the system notification on the Lock Screen that a recording was started

  This issue was addressed with improved access restrictions.

  CVE-2025-30438

• Siri

  An app may be able to access sensitive user data

  The issue was addressed with improved restriction of data container access.

  CVE-2025-31183

• Siri

  An app may be able to access sensitive user data

  This issue was addressed with improved redaction of sensitive information.

  CVE-2025-24217

• Siri

  An app may be able to access sensitive user data

  A privacy issue was addressed by not logging contents of text fields.

  CVE-2025-24214

• Siri

  An app may be able to access user-sensitive data

  An authorization issue was addressed with improved state management.

  CVE-2025-24205

• Siri

  An attacker with physical access may be able to use Siri to access sensitive user data

  This issue was addressed by restricting options offered on a locked device.

  CVE-2025-24198

• Web Extensions

  Visiting a website may leak sensitive data

  A script imports issue was addressed with improved isolation.

  CVE-2025-24192

• WebKit

  A malicious website may be able to track users in Safari private browsing mode

  This issue was addressed through improved state management.

  CVE-2025-30425

• Safari

  Visiting a malicious website may lead to user interface spoofing

  The issue was addressed with improved UI.

  CVE-2025-24113

• Safari

  Visiting a malicious website may lead to address bar spoofing

  The issue was addressed with improved checks.

  CVE-2025-30467

• WebKit

  Loading a malicious iframe may lead to a cross-site scripting attack

  A permissions issue was addressed with additional restrictions.

  CVE-2025-24208

• 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-2025-31202

• AirPlay

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

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

  CVE-2025-24252

• AirPlay

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

  A type confusion issue was addressed with improved checks.

  CVE-2025-30445

• AirPlay

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

  The issue was addressed with improved checks.

  CVE-2025-24251 CVE-2025-31197

• BiometricKit

  An app may be able to cause unexpected system termination

  A buffer overflow was addressed with improved bounds checking.

  CVE-2025-24237

• CoreAudio

  Parsing a file may lead to an unexpected app termination

  The issue was addressed with improved checks.

  CVE-2025-24163

• CoreAudio

  Playing a malicious audio file may lead to an unexpected app termination

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

  CVE-2025-24230

• CoreGraphics

  Processing a maliciously crafted file may lead to a denial-of-service or potentially disclose memory contents

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

  CVE-2025-31196

• CoreMedia

  Processing a maliciously crafted video file may lead to unexpected app termination or corrupt process memory

  This issue was addressed with improved memory handling.

  CVE-2025-24211

• CoreMedia

  Processing a maliciously crafted video file may lead to unexpected app termination or corrupt process memory

  The issue was addressed with improved memory handling.

  CVE-2025-24190

• CoreUtils

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

  An integer overflow was addressed with improved input validation.

  CVE-2025-31203

• libxml2

  Parsing a file may lead to an unexpected app termination

  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-2025-27113 CVE-2024-56171

• Security

  A remote user may be able to cause a denial-of-service

  A validation issue was addressed with improved logic.

  CVE-2025-30471

• WebKit

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

  The issue was addressed with improved memory handling.

  CVE-2025-24264 CVE-2025-24216

• WebKit

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

  A buffer overflow issue was addressed with improved memory handling.

  CVE-2025-24209

• WebKit

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

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

  CVE-2025-30427

• AirDrop

  An app may be able to read arbitrary file metadata

  A permissions issue was addressed with additional restrictions.

  CVE-2025-24097

• AirPlay

  An unauthenticated user on the same network as a signed-in Mac could send it AirPlay commands without pairing

  An access issue was addressed with improved access restrictions.

  CVE-2025-24271

• Audio

  Processing a maliciously crafted font may result in the disclosure of process memory

  The issue was addressed with improved memory handling.

  CVE-2025-24244

• CoreText

  Processing a maliciously crafted font may result in the disclosure of process memory

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

  CVE-2025-24182

• curl

  An input validation issue was addressed

  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-2024-9681

• ImageIO

  Parsing an image may lead to disclosure of user information

  A logic error was addressed with improved error handling.

  CVE-2025-24210

• Journal

  Processing a maliciously crafted file may lead to a cross site scripting attack

  The issue was addressed with improved input sanitization.

  CVE-2025-30434

• Kernel

  A malicious app may be able to attempt passcode entries on a locked device and thereby cause escalating time delays after 4 failures

  A logic issue was addressed with improved state management.

  CVE-2025-30432

• Kernel

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

  The issue was addressed with improved checks.

  CVE-2025-24203

• libarchive

  An input validation issue was addressed

  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-2024-48958

• libnetcore

  Processing maliciously crafted web content may result in the disclosure of process memory

  A logic issue was addressed with improved checks.

  CVE-2025-24194

• libxpc

  An app may be able to delete files for which it does not have permission

  This issue was addressed with improved handling of symlinks.

  CVE-2025-31182

• NetworkExtension

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

  This issue was addressed with additional entitlement checks.

  CVE-2025-30426

• Safari

  A website may be able to access sensor information without user consent

  The issue was addressed with improved checks.

  CVE-2025-31192

• Safari

  A download's origin may be incorrectly associated

  This issue was addressed through improved state management.

  CVE-2025-24167

• Sandbox Profiles

  An app may be able to read a persistent device identifier

  A permissions issue was addressed with additional restrictions.

  CVE-2025-24220

• Shortcuts

  A shortcut may be able to access files that are normally inaccessible to the Shortcuts app

  This issue was addressed with improved access restrictions.

  CVE-2025-30433

• Siri

  An attacker may be able to use Siri to enable Auto-Answer Calls

  This issue was addressed by restricting options offered on a locked device.

  CVE-2025-30436

• Web Extensions

  An app may gain unauthorized access to Local Network

  This issue was addressed with improved permissions checking.

  CVE-2025-31184

iOS 18 Security Release History

iOS 18.4 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