CVE-2026-84567

Memory Corruption Leading to Unexpected System Termination in macOS

View on CVE.org
Published Sep 14, 2026 CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Description
The issue was addressed with improved memory handling. 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 arises from improper memory handling within the macOS operating system, which an application can abuse to trigger an unexpected system termination. The result is malicious or compromised application can cause the entire OS to crash. The weakness is a classic memory corruption flaw that undermines system stability.

Affected Systems

All Apple macOS releases prior to macOS Golden Gate 27, macOS Sequoia 15.8, or macOS Tahoe 26.7 are impacted. Those versions have not incorporated the proven memory‑handling fix that was shipped in the listed releases and later updates.

Risk and Exploitability

The EPSS score is less than 1%, indicating a low probability of exploitation. Apple’s KEV catalog does not list this vulnerability, suggesting no confirmed widespread exploitation as of now. Nevertheless, the nature of the flaw—a memory corruption that can be triggered by a malicious or poorly coded application—could lead to an OS crash. The attack vector is inferred to be local or through an application with elevated privileges, as no remote exploitation is described.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Upgrade to a macOS version that contains the memory‑handling fix,, macOS Sequoia 15.8, or macOS Tahoe 26.7.
  • Install the latest Apple security updates, which include the memory‑handling fix.
  • Minimize the use of untrusted applications that could trigger memory corruption until the system is updated.

Generated by OpenCVE AI on September 20, 2026 at 20:01 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
Title Memory Corruption Leading to Unexpected System Termination in macOS
Type Values Removed Values Added
CPEs cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Weaknesses CWE-119
CWE-416
CWE-787
Metrics cvssV3_1

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

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}
Type Values Removed Values Added
Title Memory Handling Vulnerability Leading to System Termination on macOS
Weaknesses CWE-416
Type Values Removed Values Added
Title Memory Handling Vulnerability Leading to System Termination on macOS
Weaknesses CWE-416
Type Values Removed Values Added
First Time appeared Apple
Apple macos
Vendors & Products Apple
Apple macos
Type Values Removed Values Added
Description The issue was addressed with improved memory handling. 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
Earlier changes (2)
Weaknesses
  • CWE-119

    Improper Restriction of Operations within the Bounds of a Memory Buffer

  • CWE-416

    Use After Free

  • CWE-787

    Out-of-bounds Write

Sources

Status
PUBLISHED
Assigner
apple
Published
Updated
Oct 26, 2026, 8:37 PM
Reserved
Sep 1, 2026, 9:13 PM

View source JSON

Updated
Sep 17, 2026, 3:55 PM

JSON

Status
Analyzed
Published
Sep 14, 2026, 9:17 PM
Modified
Sep 18, 2026, 5:29 PM

View source JSON

No data.

Updated
Sep 20, 2026, 8:15 PM

JSON