Safari 26.4 — APPLE-SA-126800

Summary

Safari 26.4 macOS Sonoma and macOS Sequoia 24 Mar 2026 Xcode 26.4 macOS Tahoe 26.2 and later 24 Mar 2026 Background Security Improvements for iOS, iPadOS, and macOS iOS 26.3.1, iPadOS 26.3.1, macOS 26.3.1, macOS 26.3.2 17 Mar 2026 iOS 16.7.15 and iPadOS 16.7.15 iPhone 8, iPhone 8 Plus, iPhone X, iPad 5th generation, iPad Pro 9.7-inch, and iPad Pro 1

Product

Safari 26.4

What to do

General, cautious steps (verify details in the official source):

• Review exposure and plan remediation based on risk and environment.
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

• Read the official source

Related advisories