CVE-2026-28954
Received Received - Intake
File Quarantine Bypass in Apple macOS and iOS

Publication date: 2026-05-11

Last updated on: 2026-05-11

Assigner: Apple Inc.

Description
A file quarantine bypass was addressed with additional checks. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, macOS Tahoe 26.5. A maliciously crafted disk image may bypass Gatekeeper checks.
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Meta Information
Published
2026-05-11
Last Modified
2026-05-11
Generated
2026-06-21
AI Q&A
2026-05-12
EPSS Evaluated
2026-06-20
NVD
CVE-2026-28954
Affected Vendors & Products
Showing 5 associated CPEs
Vendor Product Version / Range
apple ios 18.7.9
apple ipad_os 18.7.9
apple macos_sequoia 15.7.7
apple macos_sonoma 14.8.7
apple macos_tahoe 26.5
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability involves a file quarantine bypass in Apple operating systems. Specifically, a maliciously crafted disk image can bypass Gatekeeper checks, which are security mechanisms designed to prevent untrusted software from running. The issue was addressed by adding additional checks and fixed in iOS 18.7.9, iPadOS 18.7.9, macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, and macOS Tahoe 26.5.

Impact Analysis

This vulnerability could allow an attacker to bypass security controls that normally prevent untrusted or malicious software from executing on Apple devices. By exploiting this flaw with a specially crafted disk image, malicious code could run without being blocked by Gatekeeper, potentially leading to unauthorized actions or compromise of the affected system.

Mitigation Strategies

To mitigate this vulnerability, update your Apple devices to the fixed versions: iOS 18.7.9, iPadOS 18.7.9, macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, or macOS Tahoe 26.5.

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