CVE-2026-20679
Medium
Description
The issue was addressed with improved checks. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4. Processing a maliciously crafted file may lead to unexpected app termination.
SeverityMedium
CVSS4.3
Exploit probability—
Product
Apple Macos
PublishedAug 21, 2026
First seenAug 21, 2026
Weakness typeCWE-125Out-of-bounds readCWE-416Use after free
How to fix
Update
- apple macos14.8.5, 15.7.5, 26.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| apple macos | 14.0 ≤ v < 14.8.5, 15.0 ≤ v < 15.7.5, 26.0 ≤ v < 26.4 | 14.8.5, 15.7.5, 26.4 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.