EUVD-2026-29246
GHSA-527j-9gv9-84mw
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Lifecycle Timeline
5DescriptionNVD
A logic issue was addressed with improved 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. Replying to an email could display remote images in Mail in Lockdown Mode.
AnalysisAI
Apple Mail on iOS, iPadOS, and macOS bypasses Lockdown Mode protections when replying to emails, allowing remote image loading that should be blocked. This information disclosure affects all supported Apple OS versions (iOS/iPadOS 18.x, macOS Sequoia 15.x, Sonoma 14.x, and Tahoe 26.x) prior to security updates released in early 2026. …
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RemediationAI
Within 24 hours: inventory all iOS, iPadOS, and macOS devices in use and identify users relying on Lockdown Mode for threat protection. Within 7 days: deploy available Apple security updates to iOS/iPadOS 18.x, macOS Sequoia 15.x, Sonoma 14.x, and Tahoe 26.x as released by Apple in early 2026; prioritize devices used by high-risk personnel. …
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External POC / Exploit Code
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