CVE-2026-86944
Medium
Description
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 26.7 and iPadOS 26.7, macOS Sequoia 15.8, macOS Tahoe 26.7. An app may be able to cause unexpected system termination.
SeverityMedium
CVSS5.5
Exploit probability—
Product
macOS
PublishedOct 20, 2026
First seenOct 20, 2026
Weakness typeCWE-787Out-of-bounds write
How to fix
Update
- Apple macOS15.8, 26.7 or later
- Apple iOS and iPadOS26.7 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Apple macOS | v < 15.8, v < 26.7 | 15.8, 26.7 |
| Apple iOS and iPadOS | v < 26.7 | 26.7 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.