CVE-2026-28954

Gatekeeper Disk Image Quarantine Bypass Allowing Execution of Malicious Binaries

Published May 11, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Apple ipados
Apple iphone Os
CPEs cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
Vendors & Products Apple ipados
Apple iphone Os
Type Values Removed Values Added
Title Gatekeeper Disk Image Quarantine Bypass Allowing Execution of Malicious Binaries
Type Values Removed Values Added
Title Gatekeeper Quarantine Bypass via Malicious Disk Images
Weaknesses CWE-285
CWE-640
Type Values Removed Values Added
Weaknesses CWE-290
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Gatekeeper Quarantine Bypass via Malicious Disk Images
Weaknesses CWE-285
CWE-640
Type Values Removed Values Added
First Time appeared Apple
Apple ios And Ipados
Apple macos
Vendors & Products Apple
Apple ios And Ipados
Apple macos
Type Values Removed Values Added
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.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
apple
Published
Updated
May 12, 2026, 1:05 PM
Reserved
Mar 3, 2026, 4:36 PM
Status
Analyzed
Published
May 11, 2026, 9:18 PM
Modified
Oct 26, 2026, 6:10 PM