What Xcode 27 Fixes
Xcode 27, released September 14, 2026, fixes 5 vulnerabilities in 5 parts of the system, according to Apple's security advisory.
Apple does not say that any of them were exploited before the fix. That makes Xcode 27 a routine security update: worth installing soon, not an emergency.
It has since been superseded: the newest security release for Xcode is Xcode 27.2, from October 29, 2026, which includes these fixes.
| What an attacker could do | Fixes |
|---|---|
| Elevated privileges or sandbox escape | 2 |
| Private data or protections bypassed | 1 |
| Crash or denial of service | 2 |
Grouped by us from the impact Apple gives for each fix; the impact lines below are Apple's own.
Which Devices Get Xcode 27
Apple lists Xcode 27 for: macOS Tahoe 26.6 and later.
How to Install Xcode 27
Xcode updates come from the Mac App Store, or as a download from Apple's developer website for anyone who keeps more than one version installed.
Security fixes are cumulative: any later release for the same version includes these as well, so if you are already past Xcode 27 there is nothing to do.
Every Fix in Xcode 27
All 5 CVEs in Apple's advisory, the most serious kinds first. Each entry is the part of the system affected, Apple's description of the impact and the fix, and the CVE ID.
-
App Store
An app may be able to break out of its sandbox
This issue was addressed by enforcing library validation on the affected binaries.
CVE-2026-86948 -
Xcode
A malicious app may be able to break out of its sandbox
This issue was addressed by enforcing library validation on the affected binaries.
CVE-2026-86949 -
Xcode IDE
An app may be able to access user-sensitive data
A permissions issue was addressed with improved validation.
CVE-2026-65393 -
CoreSymbolication
Parsing a maliciously crafted binary may lead to unexpected app termination
An input validation issue was addressed with improved input validation.
CVE-2026-86875 -
otool
Parsing a maliciously crafted binary may lead to unexpected tool termination
An out-of-bounds read was addressed with improved input validation.
CVE-2026-86874
Xcode Security Release History
Xcode 27 in context: the security releases Apple has published for Xcode, newest first, with the number of fixes each carried.
| Release | Released | Fixes |
|---|---|---|
| Xcode 27.2 | October 29, 2026 | 2 |
| Xcode 27 | September 14, 2026 | 5 |
| Xcode 26.4 | March 24, 2026 | 2 |
| Xcode 26.1 | November 3, 2025 | 2 |
| Xcode 26 | September 15, 2025 | 5 |
| Xcode 16.3 | March 31, 2025 | 3 |
| Xcode 16 | September 16, 2024 | 5 |
The Same Fixes Elsewhere
Apple ships most fixes to every platform that shares the code, and to older versions still under support. These releases close at least one of the same CVEs:
Frequently Asked Questions
What does Xcode 27 fix?
5 security vulnerabilities in 5 parts of the system, from Apple's advisory of September 14, 2026.
Was anything fixed in Xcode 27 exploited?
Apple does not say so for any of the 5 fixes.
Which devices can install Xcode 27?
macOS Tahoe 26.6 and later.
Is Xcode 27 the latest security update?
No. Xcode 27.2, from October 29, 2026, is newer and includes these fixes.
Source: About the security content of Xcode 27, Apple. Rechecked automatically while Apple is still adding entries.