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From: Apple Product Security via Fulldisclosure <fulldisclosure () seclists org>
Date: Mon, 28 Sep 2026 15:13:55 -0700

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APPLE-SA-09-28-2026-3 macOS Sequoia 15.8.1

macOS Sequoia 15.8.1 addresses the following issues.
Information about the security content is also available at
https://support.apple.com/149229.

Apple maintains a Security Releases page at
https://support.apple.com/100100 which lists recent
software updates with security advisories.

CoreGraphics
Available for: macOS Sequoia
Impact: Processing a maliciously crafted file may lead to arbitrary code
execution. Apple is aware of a report that this issue may have been
exploited in an extremely sophisticated attack against specific targeted
individuals on versions of iOS before iOS 27.
Description: An out-of-bounds write issue was addressed with improved
bounds checking.
CVE-2026-86950: Meta Product Security

macOS Sequoia 15.8.1 may be obtained from the Mac App Store or
Apple's Software Downloads web site:
https://support.apple.com/downloads/

All information is also posted on the Apple Security Releases
web site: https://support.apple.com/100100.

This message is signed with Apple's Product Security PGP key,
and details are available at:
https://www.apple.com/support/security/pgp/

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• APPLE-SA-09-28-2026-3 macOS Sequoia 15.8.1 Apple Product Security via Fulldisclosure (Sep 28)