1. Home
  2. CVE Database
  3. CVE-2026-86900
MEDIUM · 6.5

CVE-2026-86900

An out-of-bounds read issue was addressed with improved input validation. This issue is fixed in macOS Golden Gate 27. Mounting a maliciously crafted exFAT volume may cause unexpected system terminati...

Vulnerability Description

An out-of-bounds read issue was addressed with improved input validation. This issue is fixed in macOS Golden Gate 27. Mounting a maliciously crafted exFAT volume may cause unexpected system termination or kernel memory disclosure.

CVSS Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE

Affected Products

VendorProductVersions
AppleMacos< 27.0

Related Weaknesses (CWE)

CWE-125

References

FAQ

What is CVE-2026-86900?

CVE-2026-86900 is a vulnerability with a CVSS score of 6.5 (MEDIUM). An out-of-bounds read issue was addressed with improved input validation. This issue is fixed in macOS Golden Gate 27. Mounting a maliciously crafted exFAT volume may cause unexpected system terminati...

How severe is CVE-2026-86900?

CVE-2026-86900 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-86900?

Check the references section above for vendor advisories and patch information. Affected products include: Apple Macos.