This document describes the security content of Xcode 26.1.
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.
Released November 3, 2025
Available for: macOS Sequoia 15.6 and later
Impact: Processing a maliciously crafted file may lead to heap corruption
Description: An out-of-bounds write issue was addressed with improved input validation.
CVE-2025-43505: Nathaniel Oh (@calysteon)
Available for: macOS Sequoia 15.6 and later
Impact: A user in a privileged network position may be able to cause a denial-of-service
Description: A buffer overflow was addressed with improved bounds checking.
CVE-2025-43504: Nathaniel Oh (@calysteon)