CVE-2026-43706 Apple CVE debrief

Who should care

Users of Apple devices running iOS, iPadOS, macOS Sequoia, macOS Sonoma, macOS Tahoe, tvOS, visionOS, and watchOS should apply the updates to prevent potential process crashes from maliciously crafted web content. This includes administrators and security teams responsible for managing and securing Apple devices within their organizations. Additionally, operators and platform administrators should review the official advisory and take necessary actions to mitigate this vulnerability.

Technical summary

The CVE-2026-43706 vulnerability involves a double free issue that was addressed by Apple through improved memory management in various operating systems and devices. The issue could lead to an unexpected process crash when processing maliciously crafted web content. This vulnerability affects multiple Apple products, including 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. Apple has provided security updates for the affected operating systems and devices to mitigate this vulnerability.

Defensive priority

Medium priority due to the potential for process crashes from malicious web content. Organizations should prioritize applying security updates and reviewing compensating controls for exposed systems.

Recommended defensive actions

• Apply the security updates provided by Apple for the affected operating systems and devices.
• Ensure that all Apple devices are running the latest versions of their respective operating systems.
• Be cautious when accessing web content from untrusted 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 2026-06-29T20:17:35.570Z and was last modified on 2026-07-27T21:16:54.400Z. The NVD entry is currently Modified. This issue is related to a double free vulnerability addressed by Apple through improved memory management. The CVE record and NVD entry provide details on the affected products and versions. However, the scope of affected deployments and potential impact on organizations is not explicitly stated. Defenders should verify the affected products and versions in their environments and review the official advisory for mitigation guidance.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.