CVE-2026-20652
Memory Handling Vulnerability in Apple OS Causes Remote DoS
Publication date: 2026-02-11
Last updated on: 2026-04-02
Assigner: Apple Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| apple | macos | to 26.3 (exc) |
| apple | visionos | to 26.3 (exc) |
| apple | ipados | to 18.7.5 (exc) |
| apple | ipados | From 26.0 (inc) to 26.3 (exc) |
| apple | iphone_os | to 18.7.5 (exc) |
| apple | iphone_os | From 26.0 (inc) to 26.3 (exc) |
| apple | safari | to 26.3 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-400 | The product does not properly control the allocation and maintenance of a limited resource. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability involves improper memory handling in certain Apple operating systems and Safari. It has been addressed by improving memory management in updates to macOS Tahoe, iOS, iPadOS, visionOS, and Safari. A remote attacker could exploit this issue to cause a denial-of-service condition.
How can this vulnerability impact me? :
The primary impact of this vulnerability is that a remote attacker may be able to cause a denial-of-service, potentially disrupting the normal operation of affected Apple devices or Safari browser.
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?
The issue was addressed with improved memory handling and is fixed in macOS Tahoe 26.3, iOS 18.7.5 and iPadOS 18.7.5, visionOS 26.3, iOS 26.3 and iPadOS 26.3, and Safari 26.3.
To mitigate this vulnerability, you should update your Apple devices and software to these fixed versions as soon as possible.