About the security content of macOS Tahoe 26.3

This document describes the security content of macOS Tahoe 26.3.

About Apple security updates

For our customers' protection, Apple doesn't disclose, discuss, or confirm security issues until an investigation has occurred and patches or releases are available. Recent releases are listed on the Apple security releases page.

Apple security documents reference vulnerabilities by CVE-ID when possible.

For more information about security, see the Apple Product Security page.

macOS Tahoe 26.3

Admin Framework

Available for: macOS Tahoe

Impact: An app may be able to access sensitive user data

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

CVE-2026-20669: Mickey Jin (@patch1t)

AppleMobileFileIntegrity

Available for: macOS Tahoe

Impact: An app may be able to access sensitive user data

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

CVE-2026-20625: Mickey Jin (@patch1t), Ryan Dowd (@_rdowd)

AppleMobileFileIntegrity

Available for: macOS Tahoe

Impact: An app may be able to access sensitive user data

Description: An injection issue was addressed with improved validation.

CVE-2026-20624: Mickey Jin (@patch1t)

Bluetooth

Available for: macOS Tahoe

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

Description: A denial-of-service issue was addressed with improved validation.

CVE-2026-20650: jioundai

CFNetwork

Available for: macOS Tahoe

Impact: A remote user may be able to write arbitrary files

Description: A path handling issue was addressed with improved logic.

CVE-2026-20660: Amy (amys.website)

Contacts

Available for: macOS Tahoe

Impact: An app may be able to access information about a user's contacts

Description: A privacy issue was addressed with improved private data redaction for log entries.

CVE-2026-20681: Kirin (@Pwnrin) and LFY (@secsys) from Fudan University

CoreAudio

Available for: macOS Tahoe

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

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

CVE-2026-20611: Anonymous working with Trend Micro Zero Day Initiative

CoreMedia

Available for: macOS Tahoe

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

Description: The issue was addressed with improved memory handling.

CVE-2026-20609: Yiğit Can YILMAZ (@yilmazcanyigit)

CoreServices

Available for: macOS Tahoe

Impact: An app may be able to gain root privileges

Description: A race condition was addressed with improved state handling.

CVE-2026-20617: Gergely Kalman (@gergely_kalman), Csaba Fitzl (@theevilbit) of Iru

CoreServices

Available for: macOS Tahoe

Impact: An app may be able to gain root privileges

Description: A path handling issue was addressed with improved validation.

CVE-2026-20615: Csaba Fitzl (@theevilbit) of Iru and Gergely Kalman (@gergely_kalman)

CoreServices

Available for: macOS Tahoe

Impact: An app may be able to access sensitive user data

Description: An issue existed in the handling of environment variables. This issue was addressed with improved validation.

CVE-2026-20627: an anonymous researcher

dyld

Available for: macOS Tahoe

Impact: An attacker with memory write capability may be able to execute arbitrary code. 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 and CVE-2025-43529 were also issued in response to this report.

Description: A memory corruption issue was addressed with improved state management.

CVE-2026-20700: Google Threat Analysis Group

Foundation

Available for: macOS Tahoe

Impact: An app may be able to access user-sensitive data

Description: A privacy issue was addressed with improved handling of temporary files.

CVE-2026-20629: Asaf Cohen

Foundation

Available for: macOS Tahoe

Impact: An app may be able to monitor keystrokes without user permission

Description: A permissions issue was addressed with additional restrictions.

CVE-2026-20601: an anonymous researcher

Foundation

Available for: macOS Tahoe

Impact: An app may be able to access protected user data

Description: A permissions issue was addressed by removing the vulnerable code.

CVE-2026-20623: an anonymous researcher

Game Center

Available for: macOS Tahoe

Impact: A user may be able to view sensitive user information

Description: A logging issue was addressed with improved data redaction.

CVE-2026-20649: Asaf Cohen

GPU Drivers

Available for: macOS Tahoe

Impact: An attacker may be able to cause unexpected system termination or read kernel memory

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

CVE-2026-20620: Murray Mike

ImageIO

Available for: macOS Tahoe

Impact: Processing a maliciously crafted image may lead to disclosure of user information

Description: The issue was addressed with improved bounds checks.

CVE-2026-20675: George Karchemsky (@gkarchemsky) working with Trend Micro Zero Day Initiative

ImageIO

Available for: macOS Tahoe

Impact: Processing a maliciously crafted image may result in disclosure of process memory

Description: The issue was addressed with improved memory handling.

CVE-2026-20634: George Karchemsky (@gkarchemsky) working with Trend Micro Zero Day Initiative

Kernel

Available for: macOS Tahoe

Impact: An app may be able to cause unexpected system termination

Description: The issue was addressed with improved memory handling.

CVE-2026-20654: Jian Lee (@speedyfriend433)

Kernel

Available for: macOS Tahoe

Impact: A malicious app may be able to gain root privileges

Description: This issue was addressed with improved checks.

CVE-2026-20626: Keisuke Hosoda

Kernel

Available for: macOS Tahoe

Impact: An attacker in a privileged network position may be able to intercept network traffic

Description: A logic issue was addressed with improved checks.

CVE-2026-20671: Xin'an Zhou, Juefei Pu, Zhutian Liu, Zhiyun Qian, Zhaowei Tan, Srikanth V. Krishnamurthy, Mathy Vanhoef

LaunchServices

Available for: macOS Tahoe

Impact: An app may be able to access protected user data

Description: A permissions issue was addressed with additional restrictions.

CVE-2026-20630: an anonymous researcher

libexpat

Available for: macOS Tahoe

Impact: Processing a maliciously crafted file may lead to a denial-of-service

Description: 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-2025-59375

libxpc

Available for: macOS Tahoe

Impact: An app may be able to break out of its sandbox

Description: A logic issue was addressed with improved checks.

CVE-2026-20667: an anonymous researcher

Mail

Available for: macOS Tahoe

Impact: Turning off "Load remote content in messages” may not apply to all mail previews

Description: A logic issue was addressed with improved checks.

CVE-2026-20673: an anonymous researcher

Messages

Available for: macOS Tahoe

Impact: A shortcut may be able to bypass sandbox restrictions

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

CVE-2026-20677: Ron Masas of BreakPoint.SH

Model I/O

Available for: macOS Tahoe

Impact: Processing a maliciously crafted USD file may lead to unexpected app termination

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

CVE-2026-20616: Michael DePlante (@izobashi) of Trend Micro Zero Day Initiative

Notification Center

Available for: macOS Tahoe

Impact: An app with root privileges may be able to access private information

Description: This issue was addressed with improved redaction of sensitive information.

CVE-2026-20603: Kirin (@Pwnrin) and LFY (@secsys) from Fudan University

NSOpenPanel

Available for: macOS Tahoe

Impact: An app may be able to access sensitive user data

Description: An authorization issue was addressed with improved state management.

CVE-2026-20666: an anonymous researcher

Remote Management

Available for: macOS Tahoe

Impact: An app may be able to gain root privileges

Description: A path handling issue was addressed with improved validation.

CVE-2026-20614: Gergely Kalman (@gergely_kalman)

Safari

Available for: macOS Tahoe

Impact: An app may be able to access a user's Safari history

Description: A logic issue was addressed with improved validation.

CVE-2026-20656: Mickey Jin (@patch1t)

Sandbox

Available for: macOS Tahoe

Impact: An app may be able to break out of its sandbox

Description: A permissions issue was addressed with additional restrictions.

CVE-2026-20628: Noah Gregory (wts.dev)

Security

Available for: macOS Tahoe

Impact: An app may be able to gain root privileges

Description: A package validation issue was addressed by blocking the vulnerable package.

CVE-2026-20658: Pwn2car

Setup Assistant

Available for: macOS Tahoe

Impact: An app may be able to gain root privileges

Description: This issue was addressed with improved handling of symlinks.

CVE-2026-20610: Gergely Kalman (@gergely_kalman)

Shortcuts

Available for: macOS Tahoe

Impact: An app may be able to access sensitive user data

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

CVE-2026-20653: Enis Maholli (enismaholli.com)

Siri

Available for: macOS Tahoe

Impact: A malicious app may be able to access notifications from other iCloud devices

Description: A privacy issue was addressed by moving sensitive data to a protected location.

CVE-2026-20648: Morris Richman (@morrisinlife)

Siri

Available for: macOS Tahoe

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

Description: An authorization issue was addressed with improved state management.

CVE-2026-20662: Vivek Dhar, ASI (RM) in Border Security Force, FTR HQ BSF Kashmir

Siri

Available for: macOS Tahoe

Impact: An app may be able to access sensitive user data

Description: This issue was addressed with improved data protection.

CVE-2026-20647: Kirin (@Pwnrin)

Spotlight

Available for: macOS Tahoe

Impact: A sandboxed app may be able to access sensitive user data

Description: The issue was addressed with additional restrictions on the observability of app states.

CVE-2026-20680: an anonymous researcher

Spotlight

Available for: macOS Tahoe

Impact: An app may be able to access sensitive user data

Description: A privacy issue was addressed with improved checks.

CVE-2026-20612: Mickey Jin (@patch1t)

StoreKit

Available for: macOS Tahoe

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

Description: A privacy issue was addressed with improved checks.

CVE-2026-20641: Gongyu Ma (@Mezone0)

System Settings

Available for: macOS Tahoe

Impact: An app may be able to access sensitive user data

Description: A logging issue was addressed with improved data redaction.

CVE-2026-20619: Asaf Cohen

System Settings

Available for: macOS Tahoe

Impact: An app may be able to access user-sensitive data

Description: An issue was addressed with improved handling of temporary files.

CVE-2026-20618: Asaf Cohen

UIKit

Available for: macOS Tahoe

Impact: An app may be able to bypass certain Privacy preferences

Description: This issue was addressed by removing the vulnerable code.

CVE-2026-20606: LeminLimez

Voice Control

Available for: macOS Tahoe

Impact: An app may be able to crash a system process

Description: The issue was addressed with improved memory handling.

CVE-2026-20605: @cloudlldb of @pixiepointsec

Weather

Available for: macOS Tahoe

Impact: A malicious app may be able to read sensitive location information

Description: A logging issue was addressed with improved data redaction.

CVE-2026-20646: Morris Richman (@morrisinlife)

WebKit

Available for: macOS Tahoe

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

Description: The issue was addressed with improved memory handling.

CVE-2026-20652: Nathaniel Oh (@calysteon)

WebKit

Available for: macOS Tahoe

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

Description: This issue was addressed through improved state management.

CVE-2026-20608: HanQing from TSDubhe and Nan Wang (@eternalsakura13)

WebKit

Available for: macOS Tahoe

Impact: A website may be able to track users through Safari web extensions

Description: This issue was addressed through improved state management.

CVE-2026-20676: Tom Van Goethem

WebKit

Available for: macOS Tahoe

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

Description: The issue was addressed with improved memory handling.

CVE-2026-20644: HanQing from TSDubhe and Nan Wang (@eternalsakura13)

CVE-2026-20636: EntryHi

CVE-2026-20635: EntryHi

Wi-Fi

Available for: macOS Tahoe

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

Description: The issue was addressed with improved memory handling.

CVE-2026-20621: Wang Yu of Cyberserval

WindowServer

Available for: macOS Tahoe

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

Description: The issue was addressed with improved handling of caches.

CVE-2026-20602: @cloudlldb of @pixiepointsec

Additional recognition

Bluetooth

We would like to acknowledge Tommaso Sacchetti for their assistance.

CoreServices

We would like to acknowledge YingQi Shi (@Mas0nShi) of DBAppSecurity's WeBin lab for their assistance.

CoreTypes

We would like to acknowledge CodeColorist, Pedro Tôrres (@t0rr3sp3dr0) for their assistance.

Kernel

We would like to acknowledge Joseph Ravichandran (@0xjprx) of MIT CSAIL, Xinru Chi of Pangu Lab for their assistance.

libpthread

We would like to acknowledge Fabiano Anemone for their assistance.

Model I/O

We would like to acknowledge Yiğit Can YILMAZ (@yilmazcanyigit) for their assistance.

NetworkExtension

We would like to acknowledge Gongyu Ma (@Mezone0) for their assistance.

Shortcuts

We would like to acknowledge Kun Peeks (@SwayZGl1tZyyy), Robert Reichel for their assistance.

Transparency

We would like to acknowledge Wojciech Regula of SecuRing (wojciechregula.blog) for their assistance.

Wallet

We would like to acknowledge Lorenzo Santina (@BigNerd95) and Marco Bartoli (@wsxarcher) for their assistance.

WebKit

We would like to acknowledge David Wood, EntryHi, Luigino Camastra of Aisle Research, Stanislav Fort of Aisle Research, Vsevolod Kokorin (Slonser) of Solidlab and Jorian Woltjer for their assistance.