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VULNERABILITIES

CVE-2026-86871 Details

Description

An integer underflow was addressed with improved input validation. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. An attacker with control of a network file server may be able to cause unexpected system termination.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: CISA-ADPCVSS-B:5.9 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://support.apple.com/en-us/149035 [email protected]Vendor AdvisoryRelease Notes
https://support.apple.com/en-us/149042 [email protected]Vendor AdvisoryRelease Notes
https://support.apple.com/en-us/149043 [email protected]Vendor AdvisoryRelease Notes

Weakness Enumeration

CWE-IDCWE NameSource
CWE-190Integer Overflow or WraparoundCISA-ADP
CWE-20Improper Input ValidationCISA-ADP

Affected Products

ProductVersions
apple macos
< 15.8
>= 26.0, < 26.7

CPE

  • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

3 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-86871
NVD Published Date:
Oct 20, 2026
NVD Last Modified:
Nov 3, 2026
Source:
[email protected]
CVE-2026-86871 Details - Not Deferred