CVE-2026-43703 Apple CVE debrief

Who should care

Users of Apple devices, particularly those using iOS, iPadOS, macOS, tvOS, visionOS, and watchOS, should apply the latest security updates to protect against potential crashes caused by malicious web content. IT administrators and security teams responsible for managing Apple devices should prioritize applying these updates to prevent potential security issues.

Technical summary

The vulnerability, addressed in various Apple operating systems, involves improved memory handling to prevent unexpected process crashes when processing malicious web content. Affected products include iOS, iPadOS, macOS Sequoia, macOS Sonoma, macOS Tahoe, tvOS, visionOS, and watchOS. The CVSS score for this vulnerability is 6.5, indicating a medium severity level. This issue could allow an attacker to cause an unexpected process crash by providing maliciously crafted web content.

Defensive priority

Medium priority for Apple device users and administrators to apply security updates

Recommended defensive actions

• Apply the latest security updates for iOS, iPadOS, macOS, tvOS, visionOS, and watchOS
• Use secure web browsing practices
• Monitor device behavior for unexpected crashes
• 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 2026-06-29T20:17:35.270Z and was last modified on 2026-07-27T21:16:53.933Z. The NVD entry is currently Modified. This information is based on the NVD entry and the CVE record. The issue is related to memory handling and could lead to an unexpected process crash when processing maliciously crafted web content. The CVSS score for this vulnerability is 6.5, indicating a medium severity level. Users should verify the affected products and versions, and apply the latest security updates to protect against potential crashes caused by malicious web content.

Official resources