CVE-2026-86871

MediumCVSS 5.9/10Last modified Nov 3, 2026

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 3.1 5.9/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-20CWE-190

Affected software

VendorProductVersions
ApplemacOS< 15.8; < 26.7; < 27

References

Timeline

Published
Oct 20, 2026
Last modified
Nov 3, 2026
NVD status
Analyzed

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CVE-2026-86871: Medium severity, CVSS 5.9 | Vulnix