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Apple Stack Overflow Vulnerability in UIFoundation Component Allowing Denial-of-Service

Vulnerability

A stack overflow vulnerability has been identified in the UIFoundation component of various Apple operating systems, including iOS 18.7.7, iPadOS 18.7.7, macOS Sequoia 15.7.5, macOS Tahoe 26.4, tvOS 26.4, visionOS 26.4, and watchOS 26.4. This vulnerability was addressed with improved input validation. An app may exploit this issue to cause a denial-of-service.

Impact

Exploitation of this vulnerability can lead to a stack overflow, causing a denial-of-service condition by terminating the affected process.

Added: Mar 25, 2026, 2:03 AM
Updated: Mar 25, 2026, 2:03 AM

Vulnerability Rating

Custom Algorithm
spread
8.4
impact
2.5
exploitability
3.3
remediation
7.7
relevance
4.7
threat
0.0
urgency
2.9
incentive
0.0

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.