CVE-2026-28879
Use-After-Free in Apple Web Content Causes Process Crash
Publication date: 2026-03-25
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 | macos | From 14.0 (inc) to 14.8.5 (exc) |
| apple | macos | From 15.0 (inc) to 15.7.5 (exc) |
| apple | macos | From 26.0 (inc) to 26.4 (exc) |
| apple | ipados | to 18.7.7 (exc) |
| apple | ipados | From 26.0 (inc) to 26.4 (exc) |
| apple | iphone_os | to 18.7.7 (exc) |
| apple | iphone_os | From 26.0 (inc) to 26.4 (exc) |
| apple | tvos | to 26.4 (exc) |
| apple | visionos | to 26.4 (exc) |
| apple | watchos | to 26.4 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-416 | The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a use-after-free issue related to memory management. It occurs when the system processes maliciously crafted web content, which can lead to an unexpected process crash. The issue has been addressed and fixed in various Apple operating system versions including iOS, iPadOS, macOS, tvOS, visionOS, and watchOS.
How can this vulnerability impact me? :
The vulnerability can cause an unexpected process crash when malicious web content is processed. This could disrupt normal device operation and potentially lead to denial of service or instability in affected applications or systems.
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 of the operating systems as soon as possible.
- iOS 18.7.7 and iPadOS 18.7.7
- iOS 26.4 and iPadOS 26.4
- macOS Sequoia 15.7.5
- macOS Sonoma 14.8.5
- macOS Tahoe 26.4
- tvOS 26.4
- visionOS 26.4
- watchOS 26.4
These updates include improved memory management that addresses the use-after-free issue.