7.1
High
CVE-2026-86901 An out-of-bounds write issue was addressed with improved bounds checking
Description
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Golden Gate 27. Mounting a maliciously crafted exFAT volume may cause unexpected system termination or kernel memory disclosure.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| macOS 27 | earliest → < 27 | 27 |
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