CVE-2026-84563

Published Sep 14, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
A logic issue was addressed with improved checks. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. An app may be able to cause unexpected system termination.

Analysis

AI-generated

Technical impact

The vulnerability is a logic flaw that can be triggered by a malicious application, potentially leading to an unexpected system termination. This issue does not expose data or grant escalation, but system. The description does not detail the exact exploit mechanism, but the impact is a loss of availability for the affected system.

Affected Systems

Apple macOS is affected; the vulnerability exists in releases older than Sequoia 15.8, Tahoe 26.7, and Golden Gate 27. The issue is fixed in these release numbers.

Risk and Exploitability

The EPSS score is less than 1% and the CVSS score of 7.5 indicates high severity. The catalog, indicating no known widespread exploitation as of the latest data. The likely attack vector is a local or potentially remote application exploiting the logic flaw—this inference is based on the description that an app may trigger the termination. As the exploitation details are not explicitly stated, the risk level is best regarded as significant but not confirmed externally.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Update macOS to the latest release that incorporates Sequoia 15.8, Tahoe 26.7, or Golden Gate 27.
  • Ensure that only trusted applications are installed and run, and remove any software that may attempt to exploit unexpected behavior.
  • Monitor system stability through logs and crash reports, and consider disabling or limiting features that immediate patch is not available.

Generated by OpenCVE AI on September 20, 2026 at 18:08 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
Title Logic flaw causing unexpected system termination in macOS
Type Values Removed Values Added
Title Logic flaw causing unexpected system termination in macOS
Type Values Removed Values Added
CPEs cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Title Logic Issue Causing Unexpected System Termination in macOS
Weaknesses CWE-400
CWE-703
Type Values Removed Values Added
Weaknesses CWE-843
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Logic Issue Causing Unexpected System Termination in macOS
Weaknesses CWE-400
CWE-703
Type Values Removed Values Added
First Time appeared Apple
Apple macos
Vendors & Products Apple
Apple macos
Type Values Removed Values Added
Description A logic issue was addressed with improved checks. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. An app may be able to cause unexpected system termination.
References
Weaknesses
  • CWE-843

    Access of Resource Using Incompatible Type ('Type Confusion')

Sources

Status
PUBLISHED
Assigner
apple
Published
Updated
Oct 26, 2026, 8:44 PM
Reserved
Sep 1, 2026, 9:13 PM
Status
Analyzed
Published
Sep 14, 2026, 9:17 PM
Modified
Sep 16, 2026, 6:05 PM