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PatchSiren cyber security CVE debrief

CVE-2026-64771 Apple CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-27T21:17:15.213Z and has not been modified since then. The NVD entry is currently Modified. This CVE-2026-64771 vulnerability involves a buffer overflow addressed with improved bounds checking in multiple Apple products, including iOS, iPadOS, macOS, tvOS, and visionOS. The vulnerability could allow a remote attacker to cause unexpected application termination or heap corruption. Organizations and individuals using affected Apple products should apply patches immediately to prevent potential remote code execution. The critical severity (CVSS Score: 9.8) emphasizes the urgency for affected operators to prioritize patching and review their security posture. Limited details are available on exploitability and impacted systems. Defenders should review the official advisory and vendor guidance for affected scope, severity, and mitigations.

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

Organizations and individuals using affected Apple products, including iOS, iPadOS, macOS, tvOS, and visionOS, should apply patches immediately to prevent potential remote code execution. This includes operators, security teams, and vulnerability management teams responsible for maintaining these systems. Reviewing compensating controls and monitoring for exposed assets is also recommended while remediation is scheduled and verified. Tracking exceptions and retesting remediated assets is crucial before closing the item, ensuring evidence is documented. The vulnerability's critical severity (CVSS Score: 9.8) emphasizes the urgency for affected operators to prioritize patching and review their security posture.

Technical summary

A buffer overflow vulnerability was addressed with improved bounds checking in multiple Apple products, including iOS, iPadOS, macOS, tvOS, and visionOS. The vulnerability could allow a remote attacker to cause unexpected application termination or heap corruption. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6.

Defensive priority

Apply vendor patches immediately for iOS, iPadOS, macOS, tvOS, and visionOS to prevent potential remote code execution.

Recommended defensive actions

  • Apply iOS 18.7.10 and iPadOS 18.7.10 updates
  • Apply iOS 26.6 and iPadOS 26.6 updates
  • Apply macOS Sequoia 15.7.8 and macOS Tahoe 26.6 updates
  • Apply tvOS 26.6 and visionOS 26.6 updates
  • Review and implement vendor-provided mitigations

Evidence notes

The CVE record indicates a buffer overflow vulnerability addressed with improved bounds checking, affecting multiple Apple products. Limited details are available on exploitability and impacted systems. Organizations should verify their deployments and apply patches accordingly. The CVE was published on 2026-07-27T21:17:15.213Z and has not been modified since then. The NVD entry is currently Modified. Defenders should review the official advisory and vendor guidance for affected scope, severity, and mitigations.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-64771 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-64771

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

  • CVE-2026-64771 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-64771

    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.