CVE-2026-64717 Overview
CVE-2026-64717 is a race condition vulnerability [CWE-362] affecting multiple Apple operating systems. A local application can trigger the flaw to cause unexpected system termination or corrupt kernel memory. Apple addressed the issue with improved state handling across its platform family.
The vulnerability requires local access and user interaction, and exploitation is complex. However, successful exploitation impacts kernel integrity and availability. Apple shipped fixes in iOS 18.7.10, iPadOS 18.7.10, iOS 26.6, iPadOS 26.6, macOS Sequoia 15.7.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, and watchOS 26.6.
Critical Impact
A malicious or compromised application can corrupt kernel memory or terminate the system, undermining device stability and creating a primitive that may be chained with other flaws for privilege escalation.
Affected Products
- Apple iOS and iPadOS (versions prior to 18.7.10 and 26.6)
- Apple macOS Sequoia (prior to 15.7.8) and macOS Tahoe (prior to 26.6)
- Apple tvOS, visionOS, and watchOS (versions prior to 26.6)
Discovery Timeline
- 2026-09-14 - CVE-2026-64717 published to NVD
- 2026-09-16 - Last updated in NVD database
Technical Details for CVE-2026-64717
Vulnerability Analysis
The issue is a race condition in an Apple operating system component shared across iOS, iPadOS, macOS, tvOS, visionOS, and watchOS. Concurrent execution paths access shared state without adequate synchronization. An attacker-controlled application can interleave operations to reach an inconsistent state that the kernel later dereferences or acts upon.
The resulting behavior is either an unexpected system termination (kernel panic) or corruption of kernel memory. Kernel memory corruption is a strong exploitation primitive, since attackers can potentially convert it into arbitrary read or write against protected structures. Apple documents the fix as improved state handling, indicating additional locking or ordering guarantees were introduced.
Root Cause
The root cause is classified as a concurrent execution using shared resource with improper synchronization [CWE-362]. Multiple threads or execution contexts operate on the same state object, and specific interleavings leave the object in a state the kernel treats as valid but is not. This mirrors the classic race window between check and use of a resource.
Attack Vector
Exploitation requires a local application running on the affected device and involves user interaction. The attacker does not need prior privileges. Because winning the race window is timing-sensitive, attack complexity is high. Refer to the Apple security advisories listed under Patch Information for component-level detail.
No verified public exploit or proof-of-concept code is available for this issue at the time of publication.
Detection Methods for CVE-2026-64717
Indicators of Compromise
- Unexpected kernel panics or spontaneous device reboots correlated with a specific third-party application.
- Panic logs referencing the affected kernel component with concurrency-related stack traces.
- Repeated crash reports from a single application shortly after installation or launch.
Detection Strategies
- Collect and centralize macOS and iOS crash and panic reports for review by the security team.
- Correlate panic events with recently installed or updated applications, particularly unsigned or side-loaded binaries.
- Monitor Mobile Device Management (MDM) telemetry for devices running OS versions below the patched baselines.
Monitoring Recommendations
- Track OS version distribution across managed Apple endpoints and flag hosts below patched builds.
- Alert on abnormal frequencies of kernel panics per device or per application publisher.
- Ingest endpoint telemetry into a security data lake to correlate crashes with process lineage and code signing status.
How to Mitigate CVE-2026-64717
Immediate Actions Required
- Update all Apple devices to the fixed builds: iOS/iPadOS 18.7.10 or 26.6, macOS Sequoia 15.7.8, macOS Tahoe 26.6, and tvOS, visionOS, and watchOS 26.6.
- Enforce OS update compliance via MDM and block enrollment of devices on outdated builds.
- Restrict installation of untrusted or unsigned applications on managed endpoints.
Patch Information
Apple published the following security advisories covering the affected platforms: Apple Security Update 128066, Apple Security Update 128067, Apple Security Update 128068, Apple Security Update 128069, Apple Security Update 128070, Apple Security Update 128071, and Apple Security Update 148287.
Workarounds
- No vendor-supplied workaround exists; applying the OS updates is the only supported remediation.
- As a compensating control, limit application installation to vetted App Store or enterprise-signed sources.
- Disable or remove any third-party application observed to reliably trigger kernel panics until devices are patched.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
