An out-of-bounds write issue was addressed with improved bounds checking. (CVE-2026-86901)
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.
AI Analysis
Technical Summary
CVE-2026-86901 is an out-of-bounds write vulnerability in macOS Golden Gate 27 related to the handling of exFAT volumes. The vulnerability arises from insufficient bounds checking, which could be exploited by mounting a specially crafted exFAT volume. Successful exploitation may lead to unexpected system termination or disclosure of kernel memory. The issue has been fixed by improving bounds checking in the affected component.
Potential Impact
Exploitation of this vulnerability may cause the affected system to crash unexpectedly or leak sensitive kernel memory contents. This could lead to denial of service or potential information disclosure at the kernel level.
Mitigation Recommendations
This vulnerability is fixed in macOS Golden Gate 27. Users and administrators should update to this version to remediate the issue. No additional mitigation steps are indicated.
An out-of-bounds write issue was addressed with improved bounds checking. (CVE-2026-86901)
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-86901 is an out-of-bounds write vulnerability in macOS Golden Gate 27 related to the handling of exFAT volumes. The vulnerability arises from insufficient bounds checking, which could be exploited by mounting a specially crafted exFAT volume. Successful exploitation may lead to unexpected system termination or disclosure of kernel memory. The issue has been fixed by improving bounds checking in the affected component.
Potential Impact
Exploitation of this vulnerability may cause the affected system to crash unexpectedly or leak sensitive kernel memory contents. This could lead to denial of service or potential information disclosure at the kernel level.
Mitigation Recommendations
This vulnerability is fixed in macOS Golden Gate 27. Users and administrators should update to this version to remediate the issue. No additional mitigation steps are indicated.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-mxrx-gx5g-7pf5
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-86901"]
- State
- PUBLISHED
Threat ID: 6aa8a18055bf5e2cf5f3d1f0
Added to database: 09/15/2026, 01:38:08 UTC
Last enriched: 09/15/2026, 01:44:51 UTC
Last updated: 09/15/2026, 03:01:23 UTC
Views: 2
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.