CVE-2026-64767

Published Jul 27, 2026 CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Description
A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.7.8, macOS Sequoia 15.8.2, macOS Sonoma 14.8.8, macOS Tahoe 26.6. A remote attacker may be able to cause unexpected system termination or corrupt kernel memory.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title Buffer Overflow in macOS Kernel Enables Remote Memory Corruption
Type Values Removed Values Added
Description A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. A remote attacker may be able to cause unexpected system termination or corrupt kernel memory. A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.7.8, macOS Sequoia 15.8.2, macOS Sonoma 14.8.8, macOS Tahoe 26.6. A remote attacker may be able to cause unexpected system termination or corrupt kernel memory.
References
Type Values Removed Values Added
Title Buffer Overflow in macOS Kernel Enables Remote Memory Corruption
Type Values Removed Values Added
Title Kernel Buffer Overflow Leading to System Termination in macOS
Weaknesses CWE-119
Type Values Removed Values Added
Title Kernel Buffer Overflow Leading to System Termination in macOS
Weaknesses CWE-119
Type Values Removed Values Added
Weaknesses CWE-120
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'}

Type Values Removed Values Added
First Time appeared Apple
Apple macos
Vendors & Products Apple
Apple macos
Type Values Removed Values Added
Description A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. A remote attacker may be able to cause unexpected system termination or corrupt kernel memory.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
apple
Published
Updated
Oct 26, 2026, 8:40 PM
Reserved
Jul 20, 2026, 6:10 PM
Status
Modified
Published
Jul 27, 2026, 9:17 PM
Modified
Oct 26, 2026, 9:18 PM