macOS Sequoia 15.5 Security Update

What macOS Sequoia 15.5 Fixes

macOS Sequoia 15.5, released May 12, 2025, fixes 54 vulnerabilities in 36 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 Sequoia 15.5 a routine security update: worth installing soon, not an emergency.

It has since been superseded: the newest security release for macOS Sequoia is macOS Sequoia 15.8.2, from October 26, 2026, which includes these fixes.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 Sequoia 15.5

Apple lists macOS Sequoia 15.5 for: macOS Sequoia.

How to Install macOS Sequoia 15.5

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 Sequoia 15.5 there is nothing to do.

Every Fix in macOS Sequoia 15.5

All 54 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.

• libexpat

  Multiple issues in libexpat, including unexpected app termination or arbitrary code execution

  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-2024-8176

• afpfs

  Connecting to a malicious AFP server may corrupt kernel memory

  The issue was addressed with improved memory handling.

  CVE-2025-31246

• Installer

  A sandboxed app may be able to access sensitive user data

  A logic issue was addressed with improved checks.

  CVE-2025-31232

• Kernel

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

  The issue was addressed with improved memory handling.

  CVE-2025-31219

• mDNSResponder

  A user may be able to elevate privileges

  A correctness issue was addressed with improved checks.

  CVE-2025-31222

• Mobile Device Service

  A malicious app may be able to gain root privileges

  An input validation issue was addressed by removing the vulnerable code.

  CVE-2025-24274

• Pro Res

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

  The issue was addressed with improved input sanitization.

  CVE-2025-31234

• quarantine

  An app may be able to break out of its sandbox

  A file quarantine bypass was addressed with additional checks.

  CVE-2025-31244

• RemoteViewServices

  An app may be able to break out of its sandbox

  This issue was addressed by removing the vulnerable code.

  CVE-2025-31258

• SoftwareUpdate

  An app may be able to gain elevated privileges

  The issue was addressed with improved input sanitization.

  CVE-2025-31259

• Wi-Fi

  An attacker in physical proximity may be able to cause an out-of-bounds read in kernel memory

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

  CVE-2025-43374

• Apple Intelligence Reports

  An app may be able to access sensitive user data

  A permissions issue was addressed with additional restrictions.

  CVE-2025-31260

• Core Bluetooth

  An app may be able to access sensitive user data

  This issue was addressed through improved state management.

  CVE-2025-31212

• Finder

  An app may be able to access sensitive user data

  An information disclosure issue was addressed with improved privacy controls.

  CVE-2025-31236

• Found in Apps

  An app may be able to access user-sensitive data

  A privacy issue was addressed by removing the vulnerable code.

  CVE-2025-30443

• Libinfo

  An app may be able to bypass ASLR

  The issue was addressed with improved checks.

  CVE-2025-30440

• Notification Center

  An app may be able to access sensitive user data

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

  CVE-2025-24142

• Sandbox

  An app may be able to access sensitive user data

  A logic issue was addressed with improved checks.

  CVE-2025-31249

• Sandbox

  An app may be able to bypass certain Privacy preferences

  A logic issue was addressed with improved checks.

  CVE-2025-31224

• Security

  An app may be able to access associated usernames and websites in a user's iCloud Keychain

  A logging issue was addressed with improved data redaction.

  CVE-2025-31213

• StoreKit

  An app may be able to access sensitive user data

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

  CVE-2025-31242

• TCC

  An app may be able to access sensitive user data

  An information disclosure issue was addressed with improved privacy controls.

  CVE-2025-31250

• UserAccountUpdater

  An app may be able to access sensitive user data

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

  CVE-2025-31248

• Weather

  A malicious app may be able to read sensitive location information

  A privacy issue was addressed by removing sensitive data.

  CVE-2025-31220

• Safari

  A website may be able to spoof the domain name in the title of a pop-up window

  A spoofing issue was addressed with improved truncation when displaying the fully qualified domain name

  CVE-2025-31266

• WebKit

  A malicious website may exfiltrate data cross-origin

  The issue was addressed with improved checks.

  CVE-2025-31205

• afpfs

  Mounting a maliciously crafted AFP network share may lead to system termination

  This issue was addressed with improved checks.

  CVE-2025-31240 CVE-2025-31237

• AppleJPEG

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

  The issue was addressed with improved input sanitization.

  CVE-2025-31251

• Audio

  An app may be able to cause unexpected system termination

  A double free issue was addressed with improved memory management.

  CVE-2025-31235

• BOM

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

  The issue was addressed with improved memory handling.

  CVE-2025-24222

• CoreAudio

  Parsing a file may lead to an unexpected app termination

  The issue was addressed with improved checks.

  CVE-2025-31208

• CoreMedia

  Parsing a file may lead to an unexpected app termination

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

  CVE-2025-31239

• CoreMedia

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

  The issue was addressed with improved input sanitization.

  CVE-2025-31233

• ImageIO

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

  A logic issue was addressed with improved checks.

  CVE-2025-31226

• Kernel

  A remote attacker may be able to cause unexpected system termination

  The issue was addressed with improved checks.

  CVE-2025-24224

• Kernel

  A remote attacker may cause an unexpected app termination

  A double free issue was addressed with improved memory management.

  CVE-2025-31241

• Pro Res

  An app may be able to cause unexpected system termination

  The issue was addressed with improved checks.

  CVE-2025-31245

• WebKit

  A type confusion issue could lead to memory corruption

  This issue was addressed with improved handling of floats.

  CVE-2025-24213

• WebKit

  Processing maliciously crafted web content may lead to memory corruption

  The issue was addressed with improved checks.

  CVE-2025-31223 CVE-2025-31238

• WebKit

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

  The issue was addressed with improved checks.

  CVE-2025-31215

• WebKit

  Processing maliciously crafted web content may lead to memory corruption

  The issue was addressed with improved memory handling.

  CVE-2025-31204 CVE-2025-24223

• WebKit

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

  A type confusion issue was addressed with improved state handling.

  CVE-2025-31206

• WebKit

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

  The issue was addressed with improved input validation.

  CVE-2025-31217

• WebKit

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

  This issue was addressed with improved memory handling.

  CVE-2025-31257

• CoreGraphics

  Parsing a file may lead to disclosure of user information

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

  CVE-2025-31209

• NetworkExtension

  An app may be able to observe the hostnames of new network connections

  This issue was addressed by removing the vulnerable code.

  CVE-2025-31218

• Notes

  Hot corner may unexpectedly reveal a user’s deleted notes

  The issue was addressed with improved handling of caches.

  CVE-2025-31256

• OpenSSH

  Multiple issues in OpenSSH

  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-2025-26465 CVE-2025-26466

• Security

  A remote attacker may be able to leak memory

  An integer overflow was addressed with improved input validation.

  CVE-2025-31221

• SharedFileList

  An attacker may gain access to protected parts of the file system

  A logic issue was addressed with improved state management.

  CVE-2025-31247

macOS Sequoia Security Release History

macOS Sequoia 15.5 in context: the security releases Apple has published for macOS Sequoia, 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