iOS 18.7.3 Security Update

What iOS 18.7.3 Fixes

iOS 18.7.3 and iPadOS 18.7.3, released December 12, 2025, fixes 23 vulnerabilities in 15 parts of the system, according to Apple's security advisory.

Apple says 2 of these flaws — CVE-2025-43529, CVE-2025-14174 — may already have been exploited. That makes iOS 18.7.3 an update to install now rather than at the weekend.

It has since been superseded: the newest security release for iOS 18 is iOS 18.7.11 and iPadOS 18.7.11, from October 26, 2026, which includes these fixes.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

Exploited Before the Fix

Apple flags a fix as possibly exploited when it has a credible report that the flaw was used against real people before the patch. These are the reason to update today.

• WebKit Exploited

  Processing maliciously crafted web content may lead to arbitrary 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 versions of iOS before iOS 26. CVE-2025-14174 was also issued in response to this report.

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

  CVE-2025-43529

• WebKit Exploited

  Processing maliciously crafted web content may lead to memory corruption. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on versions of iOS before iOS 26. CVE-2025-43529 was also issued in response to this report.

  A memory corruption issue was addressed with improved validation.

  CVE-2025-14174

Which Devices Get iOS 18.7.3

Apple lists iOS 18.7.3 and iPadOS 18.7.3 for: iPhone XS, iPhone XS Max, iPhone XR, 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 18.7.3

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 18.7.3 there is nothing to do.

Every Fix in iOS 18.7.3

The rest of Apple's advisory — every fix not already listed above, 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 elevate privileges

  A logic issue was addressed with improved checks.

  CVE-2025-43512

• Kernel

  An app may be able to gain root privileges

  An integer overflow was addressed by adopting 64-bit timestamps.

  CVE-2025-46285

• FaceTime

  Password fields may be unintentionally revealed when remotely controlling a device over FaceTime

  This issue was addressed with improved state management.

  CVE-2025-43542

• Mail

  An app may be able to access sensitive user data

  An inconsistent user interface issue was addressed with improved state management.

  CVE-2025-46311

• Messages

  An app may be able to access sensitive user data

  An information disclosure issue was addressed with improved privacy controls.

  CVE-2025-46276

• Screen Time

  An app may be able to access sensitive user data

  A logging issue was addressed with improved data redaction.

  CVE-2025-43538

• Settings

  An app may be able to access sensitive user data

  This issue was addressed with improved checks.

  CVE-2025-43530

• Telephony

  An app may be able to access user-sensitive data

  This issue was addressed with additional entitlement checks.

  CVE-2025-46292

• Call History

  An attacker may be able to spoof their FaceTime caller ID

  An inconsistent user interface issue was addressed with improved state management.

  CVE-2025-46287

• AppleJPEG

  Processing a file may lead to memory corruption

  The issue was addressed with improved bounds checks.

  CVE-2025-43539

• Foundation

  Processing malicious data may lead to unexpected app termination

  A memory corruption issue was addressed with improved bounds checking.

  CVE-2025-43532

• libarchive

  Processing a file may lead to memory corruption

  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-2025-5918

• Security

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

  A logic issue was addressed with improved checks.

  CVE-2025-46290

• WebKit

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

  The issue was addressed with improved memory handling.

  CVE-2025-43535

• WebKit

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

  A type confusion issue was addressed with improved state handling.

  CVE-2025-43541

• WebKit

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

  A buffer overflow issue was addressed with improved memory handling.

  CVE-2025-43501

• WebKit

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

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

  CVE-2025-43536

• WebKit

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

  A race condition was addressed with improved state handling.

  CVE-2025-43531

• curl

  Multiple issues in curl

  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-2024-7264 CVE-2025-9086

• Icons

  An app may be able to identify what other apps a user has installed

  A permissions issue was addressed with additional restrictions.

  CVE-2025-46279

iOS 18 Security Release History

iOS 18.7.3 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