About the security content of macOS Sequoia 15.6.1.
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 August 20, 2025
Available for: macOS Sequoia
Impact: Processing a malicious image file may result in memory corruption. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals.
Description: An out-of-bounds write issue was addressed with improved bounds checking.
CVE-2025-43300: Apple