CVE-2026-64739
Received
Received - Intake
Out-of-Bounds Write in Apple iOS and macOS
Vulnerability report for CVE-2026-64739, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-07-27
Last updated on: 2026-07-27
Assigner: Apple Inc.
Description
Description
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6. An attacker may be able to cause unexpected app termination.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| apple | ios | 26.6 |
| apple | ipad_os | 26.6 |
| apple | macos_sequoia | 15.7.8 |
| apple | macos_sonoma | 14.8.8 |
| apple | macos_tahoe | 26.6 |
| apple | tv_os | 26.6 |
| apple | vision_os | 26.6 |
| apple | watch_os | 26.6 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
