CVE-2026-28959
Buffer Overflow in Apple iOS, iPadOS, macOS, tvOS, visionOS, and watchOS
Publication date: 2026-05-11
Last updated on: 2026-05-11
Assigner: Apple Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| apple | ios | 18.7.9 |
| apple | ipados | 18.7.9 |
| apple | macos_sequoia | 15.7.7 |
| apple | macos_sonoma | 14.8.7 |
| apple | macos_tahoe | 26.5 |
| apple | tvos | 26.5 |
| apple | visionos | 26.5 |
| apple | watchos | 26.5 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a buffer overflow issue that was addressed by improving bounds checking in affected Apple operating systems. A buffer overflow occurs when a program writes more data to a buffer than it can hold, which can lead to unexpected behavior.
In this case, the vulnerability could allow an app to cause unexpected system termination, meaning the system could crash or stop working properly.
How can this vulnerability impact me? :
This vulnerability can impact users by allowing an app to cause unexpected system termination. This means that the device or operating system could crash or become unstable, potentially leading to loss of unsaved data or disruption of normal device operation.
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.
- Update iOS devices to iOS 18.7.9 or iOS 26.5.
- Update iPadOS devices to iPadOS 18.7.9 or iPadOS 26.5.
- Update macOS devices to macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, or macOS Tahoe 26.5.
- Update tvOS devices to tvOS 26.5.
- Update visionOS devices to visionOS 26.5.
- Update watchOS devices to watchOS 26.5.