CVE-2026-20700
Memory Corruption in Apple OS Allows Arbitrary Code Execution
Publication date: 2026-02-11
Last updated on: 2026-03-25
Assigner: Apple Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| apple | ipados | to 26.3 (exc) |
| apple | iphone_os | to 26.3 (exc) |
| apple | macos | to 26.3 (exc) |
| apple | tvos | to 26.3 (exc) |
| apple | visionos | to 26.3 (exc) |
| apple | watchos | to 26.3 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-119 | The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a memory corruption issue that was addressed by improving state management in various Apple operating systems including watchOS, tvOS, macOS Tahoe, visionOS, iOS, and iPadOS. It allows an attacker who has the capability to write to memory to potentially execute arbitrary code on the affected device.
Apple is aware that this issue may have been exploited in a highly sophisticated attack targeting specific individuals on versions of iOS prior to iOS 26.
How can this vulnerability impact me? :
If exploited, this vulnerability could allow an attacker with memory write access to execute arbitrary code on your device. This means the attacker could potentially take control of the device, access sensitive information, or perform unauthorized actions.
Because the attack is sophisticated and targeted, it may specifically affect individuals who are targeted by such attacks, potentially compromising their device security and privacy.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, update your Apple devices to the fixed versions: watchOS 26.3, tvOS 26.3, macOS Tahoe 26.3, visionOS 26.3, iOS 26.3, and iPadOS 26.3.
Applying these updates will address the memory corruption issue and prevent potential arbitrary code execution by attackers.