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CVE-2026-43724 Apple CVE debrief

CVE-2026-43724 is an input sanitization issue affecting multiple Apple products, including iOS, iPadOS, macOS, tvOS, visionOS, and watchOS. The issue was addressed with improved input sanitization and is fixed in various versions of these operating systems. This vulnerability allows an app to potentially cause unexpected system termination or write kernel memory. Users of Apple devices should apply available patches to prevent potential system termination or kernel memory writes. The issue has a CVSS score of 7.8 and is classified as HIGH severity.

Vendor
Apple
Product
iOS and iPadOS
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-29
Original CVE updated
2026-07-27
Advisory published
2026-06-29
Advisory updated
2026-07-27

Who should care

Users of Apple devices, particularly those running iOS, iPadOS, macOS, tvOS, visionOS, and watchOS, should apply the available patches to prevent potential system termination or kernel memory writes. This includes administrators of Apple devices in enterprise environments, individuals using Apple devices for personal or professional use, and security teams responsible for monitoring and patching vulnerabilities in Apple products.

Technical summary

The CVE-2026-43724 vulnerability is caused by inadequate input sanitization in multiple Apple products. This issue allows an app to potentially cause unexpected system termination or write kernel memory. Apple has addressed this vulnerability through improved input sanitization in the affected operating systems. The vulnerability has been fixed in iOS 26.5.2 and iPadOS 26.5.2, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, and watchOS 26.6. Users should ensure their devices are updated to the latest versions to mitigate this vulnerability.

Defensive priority

High

Recommended defensive actions

  • Apply patches for iOS, iPadOS, macOS, tvOS, visionOS, and watchOS
  • Ensure all Apple devices are updated to the latest versions
  • Monitor system logs for unexpected termination or suspicious activity
  • Implement additional security measures, such as restricting app permissions
  • 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.

Evidence notes

The CVE record was published on 2026-06-29T20:17:36.837Z and was last modified on 2026-07-27T21:16:56.753Z. The NVD entry is currently Modified. This issue affects multiple Apple products, including iOS, iPadOS, macOS, tvOS, visionOS, and watchOS. Users should verify the availability of patches for their specific devices and ensure they are updated to the latest versions. The CVE record provides official details, but additional verification may be necessary to confirm affected scope and severity.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-06-29T20:17:36.837Z and has not been modified since then.