Description
This issue was addressed by removing the vulnerable code. This issue is fixed in macOS Golden Gate 27. An app may be able to disclose kernel memory.
Published: 2026-10-20
Score: 5.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Kernel memory disclosure
Action: Update OS
AI Analysis

Impact

An application may be able to read kernel memory, potentially exposing system secrets such as passwords, cryptographic keys, or other confidential data. The vulnerability was mitigated by removing the problematic code; prior to the fix, an attacker could capture sensitive information, leading to further compromise or data exfiltration.

Affected Systems

Apple macOS is affected, specifically versions that precede the release of macOS Golden Gate 27 where the vulnerable code was removed. The fix is included in macOS Golden Gate 27.

Risk and Exploitability

The EPSS score is less than 1% and the vulnerability is not listed in CISA KEV. The CVSS score is 5.5, indicating medium severity. The attack appears to be local, requiring that a malicious or compromised application runs on the target to read kernel memory. Therefore, the risk is primarily to users running potentially untrusted software rather than remote attackers.

Generated by OpenCVE AI on October 20, 2026 at 18:53 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Upgrade macOS to version 27 or newer to remove the vulnerable code.
  • Until the update is applied, avoid installing or running third‑party kernel extensions or unsigned system components that might read kernel memory.
  • Ensure Gatekeeper and System Integrity Protection are enabled to restrict the execution of unsigned code.

Generated by OpenCVE AI on October 20, 2026 at 18:53 UTC.

Tracking

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Advisories

No advisories yet.

References
History

Thu, 29 Oct 2026 18:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*

Tue, 20 Oct 2026 19:15:00 +0000

Type Values Removed Values Added
Title Kernel Memory Disclosure Vulnerability on macOS Prior to Golden Gate 27

Tue, 20 Oct 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 20 Oct 2026 12:45:00 +0000

Type Values Removed Values Added
Title Kernel Memory Disclosure Vulnerability on macOS Prior to Golden Gate 27
Weaknesses CWE-200

Tue, 20 Oct 2026 04:15:00 +0000

Type Values Removed Values Added
First Time appeared Apple
Apple macos
Vendors & Products Apple
Apple macos

Tue, 20 Oct 2026 01:15:00 +0000

Type Values Removed Values Added
Description This issue was addressed by removing the vulnerable code. This issue is fixed in macOS Golden Gate 27. An app may be able to disclose kernel memory.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: apple

Published:

Updated: 2026-10-26T20:38:25.018Z

Reserved: 2026-09-08T16:43:41.880Z

Link: CVE-2026-86940

cve-icon Vulnrichment

Updated: 2026-10-20T15:11:51.403Z

cve-icon NVD

Status : Analyzed

Published: 2026-10-20T01:17:28.080

Modified: 2026-10-29T18:27:32.377

Link: CVE-2026-86940

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-20T19:00:16Z

Weaknesses
  • CWE-200

    Exposure of Sensitive Information to an Unauthorized Actor