CVE-2026-28858
Critical
Description
A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 26.4 and iPadOS 26.4. A remote user may be able to cause unexpected system termination or corrupt kernel memory.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Apple Ipados
PublishedMar 25, 2026
First seenMar 25, 2026
Weakness typeCWE-120CWE-120
How to fix
Update
- apple ipados26.4 or later
- apple iphone_os26.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| apple ipados | v < 26.4 | 26.4 |
| apple iphone_os | v < 26.4 | 26.4 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
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