CVE-2026-20664

MEDIUM 4.3

CVSS Score

4.3

EPSS Score

0.0%

EPSS Percentile

0th

The issue was addressed with improved memory handling. This issue is fixed in Safari 26.4, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, visionOS 26.4. Processing maliciously crafted web content may lead to an unexpected process crash.

Vendor	apple
Product	safari
Ecosystems	iOS macOS
Industries	Technology
Published	Mar 25, 2026
Last Updated	Jul 15, 2026

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Affected Versions

Apple / Safari

0 < 26.4

Apple / iOS and iPadOS

0 < 26.4

Apple / macOS

0 < 26.4

Apple / visionOS

0 < 26.4

References

NVD ↗ CVE.org ↗ EPSS Data ↗

support.apple.com: https://support.apple.com/en-us/126792 support.apple.com: https://support.apple.com/en-us/126794 support.apple.com: https://support.apple.com/en-us/126799 support.apple.com: https://support.apple.com/en-us/126800 access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-20664 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2453001 security.access.redhat.com: https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-20664.json access.redhat.com: https://access.redhat.com/errata/RHSA-2026:22136 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:10702 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:16056 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:13845 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:11814 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:19535 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:16695 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:14659 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:11329 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:9692 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:19206