CVE-2026-86949

Xcode Library Validation Bypass Enables Sandbox Escape

Published Oct 20, 2026 CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Description
This issue was addressed by enforcing library validation on the affected binaries. This issue is fixed in Xcode 27. A malicious app may be able to break out of its sandbox.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
References
History
Type Values Removed Values Added
CPEs cpe:2.3:a:apple:xcode:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Xcode Library Validation Bypass Enables Sandbox Escape
Type Values Removed Values Added
Title Sandbox Escape via Unvalidated Libraries in Xcode
Weaknesses CWE-272
Type Values Removed Values Added
Weaknesses CWE-829
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'}

Type Values Removed Values Added
Title Sandbox Escape via Unvalidated Libraries in Xcode
Weaknesses CWE-272
Type Values Removed Values Added
First Time appeared Apple
Apple xcode
Vendors & Products Apple
Apple xcode
Type Values Removed Values Added
Description This issue was addressed by enforcing library validation on the affected binaries. This issue is fixed in Xcode 27. A malicious app may be able to break out of its sandbox.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
apple
Published
Updated
Oct 21, 2026, 3:56 AM
Reserved
Sep 8, 2026, 4:43 PM
Status
Analyzed
Published
Oct 20, 2026, 1:17 AM
Modified
Oct 29, 2026, 3:53 PM