Critical severity9.8NVD Advisory· Published Jul 27, 2026· Updated Oct 26, 2026

CVE-2026-64767

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Apple Inc./macOS Sequoiallm-fuzzy
Range: 15.7.8, 15.8.2
Apple Inc./macOS Sonomallm-fuzzy
Range: 14.8.8
Apple Inc./macOS Tahoellm-fuzzy
Range: 26.6
Apple Inc./macOS
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
Range: >=14.0,<14.8.8

Patches

Vulnerability mechanics

References

support.apple.com/en-us/128067nvdRelease NotesVendor Advisory
support.apple.com/en-us/128071nvdRelease NotesVendor Advisory
support.apple.com/en-us/128072nvdRelease NotesVendor Advisory
support.apple.com/en-us/149523nvd

News mentions

Apple Patches for October 2026, (Mon, Oct 26th)
SANS Internet Storm Center · Oct 27, 2026
Apple Patches Everything (July 2026), (Wed, Jul 29th)
SANS Internet Storm Center · Jul 29, 2026

cvss	0.637
epss	0.001
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000