CVE-2026-20636
Medium
Description
The issue was addressed with improved memory handling. This issue is fixed in Safari 26.3, iOS 26.3 and iPadOS 26.3, macOS Tahoe 26.3, visionOS 26.3. Processing maliciously crafted web content may lead to an unexpected process crash.
SeverityMedium
CVSS6.5
Exploit probability40. percentile0.5%
Product
Apple Safari
PublishedFeb 11, 2026
First seenFeb 11, 2026
Weakness typeCWE-119Memory buffer bounds errorCWE-120CWE-120
How to fix
Update
- apple safari26.3 or later
- apple ipados26.3 or later
- apple iphone_os26.3 or later
- apple macos26.3 or later
- apple visionos26.3 or later
Vendor advisories
- access.redhat.com/errata/RHSA-2026:22136
- access.redhat.com/errata/RHSA-2026:10702
- access.redhat.com/errata/RHSA-2026:16056
- access.redhat.com/errata/RHSA-2026:13845
- access.redhat.com/errata/RHSA-2026:11814
- access.redhat.com/errata/RHSA-2026:19535
- access.redhat.com/errata/RHSA-2026:16695
- access.redhat.com/errata/RHSA-2026:14659
- access.redhat.com/errata/RHSA-2026:11329
- access.redhat.com/errata/RHSA-2026:9692
- access.redhat.com/errata/RHSA-2026:19206
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| apple safari | v < 26.3 | 26.3 |
| apple ipados | v < 26.3 | 26.3 |
| apple iphone_os | v < 26.3 | 26.3 |
| apple macos | v < 26.3 | 26.3 |
| apple visionos | v < 26.3 | 26.3 |
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