CVE-2026-28954: Apple iPadOS

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

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.

Affected products

• Apple iPadOS: before 18.7.9 (fixed in 18.7.9)
• Apple iPhone OS: before 18.7.9 (fixed in 18.7.9)
• Apple macOS: from 14.0, before 14.8.7 (fixed in 14.8.7); from 15.0, before 15.7.7 (fixed in 15.7.7); from 26.0, before 26.5 (fixed in 26.5)

Published 2026-05-11. Last modified 2026-06-17.