CVE-2026-43745 Apple CVE debrief

Who should care

Users of Apple devices who browse the web using Safari should apply the available updates to ensure their browsers are secure. This includes users of iPhones, iPads, Macs, Apple TVs, and Apple Watches. IT teams and security professionals responsible for managing and securing Apple devices should prioritize applying these updates.

Technical summary

The CVE-2026-43745 vulnerability is an out-of-bounds write issue in Apple Safari. This issue could allow an attacker to cause an unexpected Safari crash by providing maliciously crafted web content. The vulnerability has been addressed with improved input validation in the latest Safari and operating system updates. Users should apply the available security updates to ensure their browsers are secure.

Defensive priority

Medium

Recommended defensive actions

• Apply the available security updates for Safari and the respective operating systems.
• Ensure that all Apple devices are updated to the latest versions of their operating systems.
• Be cautious when visiting unfamiliar websites or clicking on links from unknown sources.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Evidence notes

The CVE record was published on 2026-06-29T20:17:37.880Z and was last modified on 2026-07-27T21:16:59.193Z. The NVD entry is currently Modified. This issue is related to an out-of-bounds write issue addressed with improved input validation in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, and watchOS 26.6.

Official resources