CVE-2026-86901 Details
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.
A vulnerability in the handling of exFAT volumes was introduced with an out-of-bounds write issue, which could be exploited by mounting a maliciously crafted exFAT volume. This vulnerability is present in macOS Golden Gate 27 and affects MacBook Neo (2026), MacBook Air with Apple silicon (2020 and later), MacBook Pro with Apple silicon (2020 and later), iMac with Apple silicon (2021 and later), Mac mini with Apple silicon (2020 and later), Mac Studio (2022 and later), and Mac Pro with Apple silicon (2023). The vulnerability could lead to unexpected system termination or unauthorized disclosure of kernel memory.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Sep 17, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://support.apple.com/en-us/149035 | [email protected] | Release NotesVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-787 | Out-of-bounds Write | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| apple macos | < 27.0 |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 18, 2026 | Initial Analysis | [email protected] |
| Sep 17, 2026 | CVE Modified | CISA-ADP |
| Sep 14, 2026 | New CVE Received | [email protected] |