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PatchSiren cyber security CVE debrief

CVE-2026-43769 Apple CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-27T21:17:01.273Z and has not been modified since then. The NVD entry is currently Modified. This CVE-2026-43769 record documents an integer overflow vulnerability addressed with improved input validation in multiple Apple products, including iOS, iPadOS, macOS, tvOS, visionOS, and watchOS. An app may be able to cause unexpected system termination. The vulnerability has a CVSS score of 9.8 and is considered CRITICAL. Apple has released patches for affected products, and users should apply them promptly to prevent potential system termination. To verify affected systems, defenders should review system logs for unexpected system termination events and inventory affected systems for CVE-2026-43769. The official CVE record and NVD detail provide further information on this vulnerability.

Vendor
Apple
Product
iOS and iPadOS
CVSS
CRITICAL 9.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-27
Original CVE updated
2026-08-17
Advisory published
2026-07-27
Advisory updated
2026-08-17

Who should care

Apple users and administrators, especially those with internet-exposed systems, should be aware of this vulnerability and apply patches promptly. System administrators should review system logs for unexpected system termination events and inventory affected systems for CVE-2026-43769. Security teams should prioritize patching vulnerable systems, especially those exposed to the internet, to prevent potential system termination.

Technical summary

CVE-2026-43769 is an integer overflow vulnerability addressed with improved input validation. The issue affects multiple Apple products, including iOS, iPadOS, macOS, tvOS, visionOS, and watchOS. An app may be able to cause unexpected system termination. The vulnerability has a CVSS score of 9.8 and is considered CRITICAL. Apple has released patches for affected products, and users should apply them promptly to prevent potential system termination.

Defensive priority

Apple users and administrators should prioritize patching vulnerable systems, especially those exposed to the internet, to prevent potential system termination.

Recommended defensive actions

  • Apply patches from Apple for affected products: iOS 18.7.10, iPadOS 18.7.10, iOS 26.6, iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6.
  • Inventory affected systems for CVE-2026-43769 and apply patches.
  • Monitor system logs for unexpected system termination events.
  • 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 indicates an integer overflow vulnerability addressed with improved input validation, affecting multiple Apple products. Official references from Apple provide mitigation details. The vulnerability has a CVSS score of 9.8 and is considered CRITICAL. Apple users and administrators should be aware of this vulnerability and apply patches promptly. The NVD entry is currently Modified. To verify affected systems, defenders should review system logs for unexpected system termination events and inventory affected systems for CVE-2026-43769.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-43769 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-43769

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-43769 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-43769

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental 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.