CVE-2026-64767

CRITICAL
INFO Priority: 0.09 BB Relevance: 80/100
Published: 2026-07-27 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: High
I: High
A: High

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.

Weakness Classification (1)

Affected Software (3)

VendorProductVersion
apple macos 14.0 – 14.8.8
apple macos 15.0 – 15.7.8
apple macos 26.0 – 26.6

References & Advisories (4)

https://support.apple.com/en-us/128067
Release Notes Vendor Advisory
https://support.apple.com/en-us/128071
Release Notes Vendor Advisory
https://support.apple.com/en-us/128072
Release Notes Vendor Advisory

Bug Bounty Relevance

80 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

9.8 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

0.90%
Raw Score 0.008950
Percentile 59.4%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00895
2026-10-28
0.00895

Intelligence Sources

mitre ref →
nvd ref →