macOS Tahoe 26.5 Security Update

What macOS Tahoe 26.5 Fixes

macOS Tahoe 26.5, released May 11, 2026, fixes 87 vulnerabilities in 46 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 26.5 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It has since been superseded: the newest security release for macOS Tahoe is macOS Tahoe 26.7.2, from October 26, 2026, which includes these fixes.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 26.5

Apple lists macOS Tahoe 26.5 for: macOS Tahoe.

How to Install macOS Tahoe 26.5

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 26.5 there is nothing to do.

Every Fix in macOS Tahoe 26.5

All 87 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.

• Wi-Fi

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

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

  CVE-2026-28819

• AirDrop

  An attacker in a privileged network position may be able to cause a denial-of-service

  A reachable assertion was addressed with improved input validation.

  CVE-2026-43667

• App Intents

  A malicious app may be able to break out of its sandbox

  A logic issue was addressed with improved restrictions.

  CVE-2026-28995

• CUPS

  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-2026-28915

• GPU Drivers

  A malicious app may be able to break out of its sandbox

  A logging issue was addressed with improved data redaction.

  CVE-2026-28923

• HFS

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

  A buffer overflow was addressed with improved bounds checking.

  CVE-2026-28925

• Installer

  A malicious app may be able to break out of its sandbox

  A permissions issue was addressed with additional restrictions.

  CVE-2026-28978

• IOHIDFamily

  An app may be able to determine kernel memory layout

  A logging issue was addressed with improved data redaction.

  CVE-2026-28943

• IOSkywalkFamily

  An app may be able to disclose kernel memory

  A memory corruption issue was addressed with improved memory handling.

  CVE-2026-39877

• IOSurfaceAccelerator

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

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

  CVE-2026-43655

• Kernel

  An app may be able to disclose kernel memory

  The issue was addressed with improved memory handling.

  CVE-2026-43654

• Kernel

  A local user may be able to cause unexpected system termination or read kernel memory

  A buffer overflow was addressed with improved input validation.

  CVE-2026-28897

• Kernel

  An app may be able to gain root privileges

  An authorization issue was addressed with improved state management.

  CVE-2026-28951

• Kernel

  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-2026-28972

• mDNSResponder

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

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

  CVE-2026-43668

• StorageKit

  An app may be able to gain root privileges

  A consistency issue was addressed with improved state handling.

  CVE-2026-28919

• UserAccountUpdater

  An app may be able to gain root privileges

  An information leakage was addressed with additional validation.

  CVE-2026-28976

• Wi-Fi

  An attacker in a privileged network position may be able to perform denial-of-service attack using crafted Wi-Fi packets

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

  CVE-2026-28994

• Accounts

  An app may be able to bypass certain Privacy preferences

  A permissions issue was addressed with additional restrictions.

  CVE-2026-28988

• BOM

  A maliciously crafted ZIP archive may bypass Gatekeeper checks

  The issue was addressed with improved checks.

  CVE-2026-28849

• CoreMedia

  An app may be able to access private information

  This issue was addressed through improved state management.

  CVE-2026-28922

• FileProvider

  An app may be able to access sensitive user data

  A race condition was addressed with additional validation.

  CVE-2026-43659

• Kernel

  A maliciously crafted disk image may bypass Gatekeeper checks

  A file quarantine bypass was addressed with additional checks.

  CVE-2026-28954

• Kernel

  An app may be able to leak sensitive kernel state

  A logging issue was addressed with improved data redaction.

  CVE-2026-28987

• libarchive

  A maliciously crafted ZIP archive may bypass Gatekeeper checks

  A file quarantine bypass was addressed with additional checks.

  CVE-2026-28900

• Network Extensions

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

  This issue was addressed with improved checks.

  CVE-2026-28961

• Networking

  An attacker may be able to track users through their IP address

  This issue was addressed through improved state management.

  CVE-2026-28906

• Sandbox

  An app may be able to access protected user data

  A permissions issue was addressed with additional restrictions.

  CVE-2026-43652

• Shortcuts

  An app may be able to access user-sensitive data

  This issue was addressed by adding an additional prompt for user consent.

  CVE-2026-28993

• Spotlight

  An app may be able to access protected user data

  A permissions issue was addressed with additional restrictions.

  CVE-2026-28930

• Storage

  An app may be able to access sensitive user data

  A race condition was addressed with additional validation.

  CVE-2026-28996

• Sync Services

  An app may be able to access Contacts without user consent

  A race condition was addressed with improved handling of symbolic links.

  CVE-2026-28924

• TV App

  An app may be able to observe unprotected user data

  A path handling issue was addressed with improved logic.

  CVE-2026-39871

• WebKit

  Processing maliciously crafted web content may disclose sensitive user information

  This issue was addressed with improved access restrictions.

  CVE-2026-28962

• WebKit

  An app may be able to access sensitive user data

  This issue was addressed with improved data protection.

  CVE-2026-28958

• WebKit

  Processing maliciously crafted web content may bypass Content Security Policy

  A Content Security Policy bypass was addressed with improved enforcement in AudioWorklet contexts.

  CVE-2026-43670

• zip

  A maliciously crafted ZIP archive may bypass Gatekeeper checks

  A logic issue was addressed with improved file handling.

  CVE-2026-28914

• zlib

  Visiting a maliciously crafted website may leak sensitive data

  An information leakage was addressed with additional validation.

  CVE-2026-28920

• Accelerate

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

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

  CVE-2026-28991

• APFS

  An app may be able to cause unexpected system termination

  A buffer overflow was addressed with improved bounds checking.

  CVE-2026-28959

• AppleJPEG

  Processing a maliciously crafted image may lead to a denial-of-service

  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-2026-1837

• AppleJPEG

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

  A memory corruption issue was addressed with improved input validation.

  CVE-2026-28956

• CoreServices

  Processing a maliciously crafted file may lead to unexpected app termination

  The issue was addressed with improved checks.

  CVE-2026-28936

• CoreSymbolication

  Parsing a maliciously crafted file may lead to an unexpected app termination

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

  CVE-2026-28918

• ImageIO

  Processing a maliciously crafted image may corrupt process memory

  A buffer overflow issue was addressed with improved memory handling.

  CVE-2026-43661

• ImageIO

  Processing a maliciously crafted file may lead to unexpected app termination

  The issue was addressed with improved bounds checks.

  CVE-2026-28977

• ImageIO

  Processing a maliciously crafted image may corrupt process memory

  The issue was addressed with improved memory handling.

  CVE-2026-28990

• IOHIDFamily

  An attacker may be able to cause unexpected app termination

  A memory corruption vulnerability was addressed with improved locking.

  CVE-2026-28992

• IOKit

  An app may be able to cause unexpected system termination

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

  CVE-2026-28969

• Kernel

  An app may be able to cause unexpected system termination

  An integer overflow was addressed with improved input validation.

  CVE-2026-28952

• Kernel

  An app may be able to cause unexpected system termination

  A race condition was addressed with additional validation.

  CVE-2026-28986

• LaunchServices

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

  A type confusion issue was addressed with improved checks.

  CVE-2026-28983

• mDNSResponder

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

  The issue was addressed with improved memory handling.

  CVE-2026-43653

• mDNSResponder

  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-2026-28985

• mDNSResponder

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

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

  CVE-2026-43666

• Model I/O

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

  The issue was addressed with improved checks.

  CVE-2026-28941

• Model I/O

  Processing a maliciously crafted image may corrupt process memory

  The issue was addressed with improved memory handling.

  CVE-2026-28940

• Quick Look

  Parsing a maliciously crafted file may lead to an unexpected app termination

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

  CVE-2026-43656

• SceneKit

  Processing a maliciously crafted image may corrupt process memory

  The issue was addressed with improved memory handling.

  CVE-2026-39870

• SceneKit

  A remote attacker may be able to cause unexpected app termination

  A buffer overflow was addressed with improved bounds checking.

  CVE-2026-28846

• SMB

  A remote attacker may be able to cause unexpected system termination

  A buffer overflow was addressed with improved bounds checking.

  CVE-2026-28848

• Spotlight

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

  This issue was addressed with improved checks to prevent unauthorized actions.

  CVE-2026-28974

• WebKit

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

  The issue was addressed with improved memory handling.

  CVE-2026-43658 CVE-2026-28984

• WebKit

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

  The issue was addressed with improved memory handling.

  CVE-2026-28905 CVE-2026-28847 CVE-2026-28904 CVE-2026-28955 CVE-2026-28903 CVE-2026-28953 CVE-2026-28902 CVE-2026-28901 CVE-2026-28913

• 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-2026-28883

• WebKit

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

  The issue was addressed with improved input validation.

  CVE-2026-28917

• 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-2026-28947 CVE-2026-28946 CVE-2026-28942

• WebRTC

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

  The issue was addressed with improved memory handling.

  CVE-2026-28944

• Audio

  Processing an audio stream in a maliciously crafted media file may terminate the process

  The issue was addressed with improved memory handling.

  CVE-2026-39869

• 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-2025-14017 CVE-2025-14819

• Kernel

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

  A denial of service issue was addressed by removing the vulnerable code.

  CVE-2026-28908

• Mail Drafts

  Replying to an email could display remote images in Mail in Lockdown Mode

  A logic issue was addressed with improved checks.

  CVE-2026-28929

• WebKit

  Processing maliciously crafted web content may prevent Content Security Policy from being enforced

  A validation issue was addressed with improved logic.

  CVE-2026-43660

• WebKit

  Processing maliciously crafted web content may prevent Content Security Policy from being enforced

  The issue was addressed with improved input validation.

  CVE-2026-28907

• WebKit

  A malicious iframe may use another website’s download settings

  The issue was addressed with improved UI handling.

  CVE-2026-28971

macOS Tahoe Security Release History

macOS Tahoe 26.5 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