CVE-2026-20700
Description
A memory corruption issue was addressed with improved state management. This issue is fixed in iOS 26.3 and iPadOS 26.3, macOS Tahoe 26.3, tvOS 26.3, visionOS 26.3, watchOS 26.3. An attacker with memory write capability may be able to execute arbitrary code. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on versions of iOS before iOS 26. CVE-2025-14174 and CVE-2025-43529 were also issued in response to this report.
How to fix
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA due date: Mar 5, 2026- apple ipados26.3 or later
- apple iphone_os26.3 or later
- apple macos26.3 or later
- apple tvos26.3 or later
- apple visionos26.3 or later
- apple watchos26.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| apple ipados | v < 26.3 | 26.3 |
| apple iphone_os | v < 26.3 | 26.3 |
| apple macos | v < 26.3 | 26.3 |
| apple tvos | v < 26.3 | 26.3 |
| apple visionos | v < 26.3 | 26.3 |
| apple watchos | v < 26.3 | 26.3 |
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Attack Surface Management
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