CVE-2026-20637

A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.7.7 and iPadOS 18.7.7, iOS 26.3 and iPadOS 26.3, macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.3, tvOS 26.3, visionOS 26.3, watchOS 26.3. An app may be able to cause unexpected system termination.

Affected products

Apple Macos, Ios, Ipados, Macos Sequoia, Macos Sonoma, Macos Tahoe, Tvos, Visionos

Apple Ipados

< 18.7.7, 26.3

Apple Iphone Os

< 18.7.7, 26.3

Apple Macos

< 14.8.5, 15.7.5, 26.3

Apple Tvos

< 26.3

Apple Visionos

< 26.3

Apple Watchos

< 26.3

Fix

Available

CVSS 3.1

6.2 MEDIUM

EPSS

0.2% (10th percentile)

Weakness

CWE-416

NVD status

Analyzed

Published

2026-03-25