CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Lifecycle Timeline
3Description
The issue was addressed with improved memory handling. This issue is fixed in Safari 26.4, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, tvOS 26.4, visionOS 26.4, watchOS 26.4. A malicious website may be able to process restricted web content outside the sandbox.
Analysis
A sandbox escape vulnerability in Apple's WebKit browser engine allows malicious websites to process restricted web content outside the security sandbox, potentially enabling unauthorized access to protected system resources. The vulnerability affects Safari and all Apple operating systems including iOS, iPadOS, macOS, tvOS, visionOS, and watchOS. …
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Remediation
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.
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External POC / Exploit Code
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EUVD-2026-15133