tvOS 18.6 Security Update

What tvOS 18.6 Fixes

tvOS 18.6, released July 29, 2025, fixes 26 vulnerabilities in 14 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 tvOS 18.6 a routine security update: worth installing soon, not an emergency.

It is the newest security release for tvOS 18 on Apple's list.

Grouped by us from the impact Apple gives for each fix; the impact lines below are Apple's own.

Which Devices Get tvOS 18.6

Apple lists tvOS 18.6 for: Apple TV HD and Apple TV 4K (all models).

How to Install tvOS 18.6

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 18.6 there is nothing to do.

Every Fix in tvOS 18.6

All 26 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.

• CFNetwork

  A non-privileged user may be able to modify restricted network settings

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

  CVE-2025-43223

• CoreMedia Playback

  An app may be able to access user-sensitive data

  The issue was addressed with additional permissions checks.

  CVE-2025-43230

• WebKit

  Processing maliciously crafted web content may disclose sensitive user information

  This issue was addressed through improved state management.

  CVE-2025-43227

• afclip

  Parsing a file may lead to an unexpected app termination

  The issue was addressed with improved memory handling.

  CVE-2025-43186

• CoreAudio

  Processing a maliciously crafted audio file may lead to memory corruption

  The issue was addressed with improved memory handling.

  CVE-2025-43277

• CoreMedia

  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-2025-43210

• ICU

  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-2025-43209

• Kernel

  An app may be able to cause unexpected system termination

  A double free issue was addressed with improved memory management.

  CVE-2025-43282

• libxml2

  Processing a file may lead to memory corruption

  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-2025-7425

• libxslt

  Processing maliciously crafted web content may lead to memory corruption

  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-2025-7424

• Metal

  Processing a maliciously crafted texture may lead to unexpected app termination

  Multiple memory corruption issues were addressed with improved input validation.

  CVE-2025-43234

• Model I/O

  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-2025-43224 CVE-2025-43221

• Model I/O

  Processing a maliciously crafted file may lead to unexpected app termination

  An input validation issue was addressed with improved memory handling.

  CVE-2025-31281

• SQLite

  Processing a file may lead to memory corruption

  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-2025-6965

• WebKit

  Processing maliciously crafted web content may lead to memory corruption

  The issue was addressed with improved memory handling.

  CVE-2025-31278 CVE-2025-31277 CVE-2025-31273

• WebKit

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

  The issue was addressed with improved memory handling.

  CVE-2025-43214 CVE-2025-43213 CVE-2025-43212

• WebKit

  Processing web content may lead to a denial-of-service

  The issue was addressed with improved memory handling.

  CVE-2025-43211

• 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-2025-43216

• WebKit

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

  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-2025-6558

• ImageIO

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

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

  CVE-2025-43226

• WebKit

  Processing maliciously crafted web content may disclose internal states of the app

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

  CVE-2025-43265

tvOS 18 Security Release History

tvOS 18.6 in context: the security releases Apple has published for tvOS 18, 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