About the security content of Xcode 27
This document describes the security content of Xcode 27.
About Apple security updates
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.
Xcode 27
Released September 14, 2026
App Store
Available for: macOS Tahoe 26.6 and later
Impact: An app may be able to break out of its sandbox
Description: This issue was addressed by enforcing library validation on the affected binaries.
CVE-2026-86948: Ilya Andr (andrd3v) of Positive Technologies
Entry added October 19, 2026
CoreSymbolication
Available for: macOS Tahoe 26.6 and later
Impact: Parsing a maliciously crafted binary may lead to unexpected app termination
Description: An input validation issue was addressed with improved input validation.
CVE-2026-86875: Egor Saltykov
Entry added October 19, 2026
otool
Available for: macOS Tahoe 26.6 and later
Impact: Parsing a maliciously crafted binary may lead to unexpected tool termination
Description: An out-of-bounds read was addressed with improved input validation.
CVE-2026-86874: Eddy T
Entry added October 19, 2026
Xcode
Available for: macOS Tahoe 26.6 and later
Impact: A malicious app may be able to break out of its sandbox
Description: This issue was addressed by enforcing library validation on the affected binaries.
CVE-2026-86949: Ilya Andr (andrd3v) of Positive Technologies
Entry added October 19, 2026
Xcode IDE
Available for: macOS Tahoe 26.6 and later
Impact: An app may be able to access user-sensitive data
Description: A permissions issue was addressed with improved validation.
CVE-2026-65393: Mickey Jin (@patch1t)
Additional recognition
otool
We would like to acknowledge Eddy T for their assistance.
Swift
We would like to acknowledge Owais Lone (thesecguy), Yuval Fradkin for their assistance.
tapi
We would like to acknowledge Jian Lee (@speedyfriend433) for their assistance.
Xcode IDE
We would like to acknowledge Yiğit Can YILMAZ (@yilmazcanyigit) for their assistance.