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PatchSiren cyber security CVE debrief

CVE-2026-64738 Apple CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-27T21:17:12.677Z and has not been modified since then. CVE-2026-64738 is a critical permissions issue 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. A malicious app may be able to break out of its sandbox, potentially leading to arbitrary code execution. Organizations and individuals using affected Apple products should apply patches immediately to prevent potential exploitation. The vulnerability's critical severity and potential impact on system security necessitate immediate attention and mitigation.

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, and macOS devices, should apply patches immediately to prevent potential exploitation. This includes administrators of enterprise environments, individuals using personal devices, and security teams responsible for vulnerability management. The vulnerability's critical severity and potential impact on system security necessitate immediate attention and mitigation.

Technical summary

A critical permissions issue was addressed with additional restrictions in iOS 18.7.10, iPadOS 18.7.10, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6. A malicious app may be able to break out of its sandbox, potentially leading to arbitrary code execution. This issue is fixed in the mentioned updates, and users should apply patches immediately to prevent potential exploitation. The vulnerability allows a malicious app to break out of its sandbox due to a permissions issue, which could lead to unauthorized access and control of the affected system. Defenders should verify patch deployment and monitor for suspicious activity.

Defensive priority

Critical vulnerability in Apple products; immediate attention required

Recommended defensive actions

  • Apply patches for affected Apple products
  • Inventory and verify vulnerable systems
  • Monitor for suspicious activity
  • Implement compensating controls
  • Retest and validate patch effectiveness

Evidence notes

Official CVE and NVD records confirm a critical permissions issue in Apple products, including iOS, iPadOS, and macOS. Vendor advisories provide mitigation details. Affected products include iOS 18.7.10, iPadOS 18.7.10, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6. The issue allows a malicious app to break out of its sandbox, potentially leading to arbitrary code execution. Defenders should verify patch deployment and monitor for suspicious activity.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-64738 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-64738

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

  • CVE-2026-64738 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-64738

    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.