CVE-2026-20687
High
Description
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 26.4 and iPadOS 26.4, macOS Sequoia 15.7.5, macOS Tahoe 26.4, tvOS 26.4, watchOS 26.4. An app may be able to cause unexpected system termination or write kernel memory.
SeverityHigh
CVSS7.1
Exploit probability—
Product
Apple Ipados
PublishedMar 25, 2026
First seenMar 25, 2026
Weakness typeCWE-416Use after free
How to fix
Update
- apple ipados18.7.7, 26.4 or later
- apple iphone_os18.7.7, 26.4 or later
- apple macos15.7.5, 26.4 or later
- apple tvos26.4 or later
- apple watchos26.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| apple ipados | v < 18.7.7, 26.0 ≤ v < 26.4 | 18.7.7, 26.4 |
| apple iphone_os | v < 18.7.7, 26.0 ≤ v < 26.4 | 18.7.7, 26.4 |
| apple macos | 15.0 ≤ v < 15.7.5, 26.0 ≤ v < 26.4 | 15.7.5, 26.4 |
| apple tvos | v < 26.4 | 26.4 |
| apple watchos | v < 26.4 | 26.4 |
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