The issue was addressed with improved memory handling. This issue is fixed in Safari 26.1, iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, macOS Tahoe 26.1, tvOS 26.1, visionOS 26.1, watchOS 26.1. Processing maliciously crafted web content may lead to memory corruption.
https://support.apple.com/en-us/125640
https://support.apple.com/en-us/125639
https://support.apple.com/en-us/125638
https://support.apple.com/en-us/125637
https://support.apple.com/en-us/125634
https://support.apple.com/en-us/125633
https://support.apple.com/en-us/125632
https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-43433.json
https://bugzilla.redhat.com/show_bug.cgi?id=2448783
https://access.redhat.com/security/cve/CVE-2025-43433
https://access.redhat.com/errata/RHSA-2025:23743
https://access.redhat.com/errata/RHSA-2025:23742
https://access.redhat.com/errata/RHSA-2025:23591
https://access.redhat.com/errata/RHSA-2025:23583
https://access.redhat.com/errata/RHSA-2025:23452
https://access.redhat.com/errata/RHSA-2025:23451
https://access.redhat.com/errata/RHSA-2025:23434
https://access.redhat.com/errata/RHSA-2025:23433
https://access.redhat.com/errata/RHSA-2025:23110