CVE-2026-20635
Medium
Description
The issue was addressed with improved memory handling. This issue is fixed in Safari 26.3, iOS 18.7.5 and iPadOS 18.7.5, iOS 26.3 and iPadOS 26.3, macOS Tahoe 26.3, tvOS 26.3, visionOS 26.3, watchOS 26.3. Processing maliciously crafted web content may lead to an unexpected process crash.
SeverityMedium
CVSS4.3
Exploit probability—
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 ipados18.7.5, 26.3 or later
- apple iphone_os18.7.5, 26.3 or later
- apple macos26.3 or later
- apple tvos26.3 or later
- apple visionos26.3 or later
- apple watchos26.3 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 < 18.7.5, 26.0 ≤ v < 26.3 | 18.7.5, 26.3 |
| apple iphone_os | v < 18.7.5, 26.0 ≤ v < 26.3 | 18.7.5, 26.3 |
| apple macos | v < 26.3 | 26.3 |
| apple tvos | v < 26.3 | 26.3 |
| apple visionos | v < 26.3 | 26.3 |
| apple watchos | v < 26.3 | 26.3 |
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.