tvOS 26.3 Security Update

What tvOS 26.3 Fixes

tvOS 26.3, released February 11, 2026, fixes 15 vulnerabilities in 13 parts of the system, according to Apple's security advisory.

Apple says one of these flaws — CVE-2026-20700 — may already have been exploited. That makes tvOS 26.3 an update to install now rather than at the weekend.

It has since been superseded: the newest security release for tvOS 26 is tvOS 26.6, from July 27, 2026, which includes these fixes.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. This one is the reason to update today.

• dyld Exploited

  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.

  A memory corruption issue was addressed with improved state management.

  CVE-2026-20700

Which Devices Get tvOS 26.3

Apple lists tvOS 26.3 for: Apple TV HD and Apple TV 4K (all models).

How to Install tvOS 26.3

On the Apple TV, open Settings → System → Software Updates.

Security fixes are cumulative: any later release for the same version includes these as well, so if you are already past tvOS 26.3 there is nothing to do.

Every Fix in tvOS 26.3

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.

• Bluetooth

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

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

  CVE-2026-20650

• CoreServices

  An app may be able to gain root privileges

  A race condition was addressed with improved state handling.

  CVE-2026-20617

• Kernel

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

  A logic issue was addressed with improved checks.

  CVE-2026-20671

• Sandbox

  An app may be able to break out of its sandbox

  A permissions issue was addressed with additional restrictions.

  CVE-2026-20628

• Game Center

  A user may be able to view sensitive user information

  A logging issue was addressed with improved data redaction.

  CVE-2026-20649

• AppleKeyStore

  An app may be able to cause unexpected system termination

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

  CVE-2026-20637

• CoreAudio

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

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

  CVE-2026-20611

• CoreMedia

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

  The issue was addressed with improved memory handling.

  CVE-2026-20609

• Kernel

  An app may be able to cause unexpected system termination

  The issue was addressed with improved memory handling.

  CVE-2026-20654

• libexpat

  Processing a maliciously crafted file 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-2025-59375

• WebKit

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

  The issue was addressed with improved memory handling.

  CVE-2026-20635

• ImageIO

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

  The issue was addressed with improved bounds checks.

  CVE-2026-20675

• ImageIO

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

  The issue was addressed with improved memory handling.

  CVE-2026-20634

• StoreKit

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

  A privacy issue was addressed with improved checks.

  CVE-2026-20641

tvOS 26 Security Release History

tvOS 26.3 in context: the security releases Apple has published for tvOS 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