CVE-2026-20639
High
Description
An integer overflow was addressed with improved input validation. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.3. Processing a maliciously crafted string may lead to heap corruption.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Apple Macos
PublishedMar 25, 2026
First seenMar 25, 2026
Weakness typeCWE-190Integer overflow
How to fix
Update
- apple macos14.8.5, 15.7.5, 26.3 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 < 26.3 | 14.8.5, 15.7.5, 26.3 |
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