An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.7.8, macOS Tahoe 26.6. An app may be able to cause unexpected system termination.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable yes

Technical Impact total

Affected Vendors & Products

Vendors Products
Apple
  • Macos

No data.

No data.

References
Link Providers
https://support.apple.com/en-us/128067 cve-icon
https://support.apple.com/en-us/128071 cve-icon
History

Tue, 28 Jul 2026 16:15:00 +0000

Type Values Removed Values Added
Title Out‑of‑Bounds Write Causing Unexpected System Termination in macOS
Weaknesses CWE-119
CWE-787
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

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

Tue, 28 Jul 2026 04:00:00 +0000

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

Mon, 27 Jul 2026 20:30:00 +0000

Type Values Removed Values Added
Description An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.7.8, macOS Tahoe 26.6. An app may be able to cause unexpected system termination.
References
cve-icon MITRE

Status: PUBLISHED

Assigner: apple

Published: 2026-07-27T20:12:55.333Z

Updated: 2026-07-28T14:36:11.723Z

Reserved: 2026-05-01T22:46:21.647Z

Link: CVE-2026-43748

cve-icon Vulnrichment

Updated: 2026-07-28T14:35:59.857Z

cve-icon NVD

No data.

cve-icon Redhat

No data.