CVE-2026-43754 Apple CVE debrief

Who should care

Organizations and individuals using affected Apple operating systems, particularly those with high-security requirements or sensitive data processing, should review and apply available security updates. This includes administrators of macOS Sequoia, Sonoma, and Tahoe systems, as well as security teams responsible for vulnerability management and incident response. Review of system logs and implementation of compensating controls may also be necessary to mitigate potential risks.

Technical summary

A vulnerability in Apple operating systems, including macOS Sequoia, Sonoma, and Tahoe, allows an app to potentially leak sensitive kernel state. This issue was addressed with improved redaction of sensitive information in iOS 18.7.10, iPadOS 18.7.10, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6. The vulnerability could allow an app to access sensitive kernel state, potentially leading to information disclosure. Affected systems should be reviewed and updated to prevent potential exploitation.

Defensive priority

Medium-priority defensive review recommended due to potential for sensitive kernel state leakage.

Recommended defensive actions

• Review and apply available security updates from Apple
• Inventory affected systems for macOS Sequoia, Sonoma, and Tahoe
• Monitor system logs for potential kernel state leakage
• Implement compensating controls to limit app execution
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed

Evidence notes

Official CVE and NVD records indicate an issue addressed with improved redaction of sensitive information in various Apple operating systems. An app may be able to leak sensitive kernel state. The issue was addressed in iOS 18.7.10, iPadOS 18.7.10, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6. Evidence limits suggest that further verification is needed to confirm affected scope and severity. Defenders should review official advisories and verify system logs for potential kernel state leakage.

Official resources