macOS Tahoe 26.6.2 Security Update

What macOS Tahoe 26.6.2 Fixes

macOS Tahoe 26.6.2, released August 17, 2026, fixes 34 vulnerabilities in 10 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 macOS Tahoe 26.6.2 a routine security update: worth installing soon, not an emergency.

It has since been superseded: the newest security release for macOS Tahoe is macOS Tahoe 26.7.2, from October 26, 2026, which includes these fixes.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 macOS Tahoe 26.6.2

Apple lists macOS Tahoe 26.6.2 for: macOS Tahoe.

The macOS Tahoe 26.6.2 release page has its build numbers and release history.

How to Install macOS Tahoe 26.6.2

On the Mac, open System Settings → General → Software Update. Macs that cannot run the newest macOS are offered the update for their own version there.

Security fixes are cumulative: any later release for the same version includes these as well, so if you are already past macOS Tahoe 26.6.2 there is nothing to do.

Every Fix in macOS Tahoe 26.6.2

All 34 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

• 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

macOS Tahoe Security Release History

macOS Tahoe 26.6.2 in context: the security releases Apple has published for macOS Tahoe, 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