iOS 26.6.1 Security Update

What iOS 26.6.1 Fixes

iOS 26.6.1 and iPadOS 26.6.1, released August 17, 2026, fixes 35 vulnerabilities in 11 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 26.6.1 a routine security update: worth installing soon, not an emergency.

It has since been superseded: the newest security release for iOS 26 is iOS 26.7.2 and iPadOS 26.7.2, from October 26, 2026, which includes these fixes.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 26.6.1

Apple lists iOS 26.6.1 and iPadOS 26.6.1 for: iPhone 11 and later, iPad Pro 12.9-inch 3rd generation and later, iPad Pro 11-inch 1st generation and later, iPad Air 3rd generation and later, iPad 8th generation and later, and iPad mini 5th generation and later.

The iOS 26.6.1 release page has its build numbers and release history.

How to Install iOS 26.6.1

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 26.6.1 there is nothing to do.

Every Fix in iOS 26.6.1

All 35 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.

• ImageIO

  Processing an image may lead to arbitrary code execution

  An integer overflow was addressed with improved input validation.

  CVE-2026-65346

• IOMobileFrameBuffer

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

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

  CVE-2026-64736

• Kernel

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

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

  CVE-2026-65349

• Kernel

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

  The issue was addressed with improved memory handling.

  CVE-2026-65330 CVE-2026-28935

• Telephony

  An attacker in a privileged network position may be able to bypass IPSec authentication and intercept network traffic

  An authentication issue was addressed with improved state management.

  CVE-2026-65329

• Audio

  An app may be able to leak sensitive user information

  A logic issue was addressed with improved checks.

  CVE-2026-65339

• Authentication Services

  A website may be able to determine a user's IP address with Private Relay turned on

  An information disclosure issue was addressed with improved state management.

  CVE-2026-65355

• WebKit

  A website may be able to determine a user's IP address with Private Relay turned on

  An information disclosure issue was addressed with improved state management.

  CVE-2026-65352

• WebKit History

  Visiting a maliciously crafted website may leak sensitive data

  The issue was addressed with improved checks.

  CVE-2026-64778

• ImageIO

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

  The issue was addressed with improved checks.

  CVE-2026-65347

• IOGPUFamily

  Processing maliciously crafted web content may lead to memory corruption

  The issue was addressed with improved memory handling.

  CVE-2026-64788

• Kernel

  A remote attacker may be able to cause unexpected system termination

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

  CVE-2026-65343

• WebKit

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

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

  CVE-2026-64784

• WebKit

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

  The issue was addressed with improved memory handling.

  CVE-2026-43795 CVE-2026-65338

• WebKit

  Processing maliciously crafted web content may lead to memory corruption

  The issue was addressed with improved memory handling.

  CVE-2026-65341

• WebKit

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

  A memory corruption vulnerability was addressed with improved locking.

  CVE-2026-64782

• WebKit

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

  The issue was addressed with improved input validation.

  CVE-2026-64781

• WebKit

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

  This issue was addressed through improved state management.

  CVE-2026-65351 CVE-2026-65340 CVE-2026-65337 CVE-2026-65336 CVE-2026-65335 CVE-2026-65333 CVE-2026-65332 CVE-2026-65331

• 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-2026-64715

• WebKit

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

  The issue was addressed with improved checks.

  CVE-2026-64780

• WebKit

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

  A memory corruption issue was addressed with improved state management.

  CVE-2026-65334

• WebKit

  Processing maliciously crafted web content may lead to memory corruption

  A memory corruption issue was addressed with improved memory handling.

  CVE-2026-43794

• WebKit

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

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

  CVE-2026-64787

• WebKit Storage

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

  A memory corruption vulnerability was addressed with improved locking.

  CVE-2026-64779

• WebRTC

  Processing maliciously crafted web content may lead to memory corruption

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

  CVE-2026-65391

• WebRTC

  Processing maliciously crafted web content may lead to memory corruption

  An integer overflow was addressed with improved input validation.

  CVE-2026-65390

iOS 26 Security Release History

iOS 26.6.1 in context: the security releases Apple has published for iOS 26, 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