CVE-2026-64751 Overview
CVE-2026-64751 is a use-after-free vulnerability [CWE-416] affecting multiple Apple operating systems. A malicious application can trigger unexpected system termination or write to kernel memory, leading to potential privilege escalation or arbitrary kernel code execution. Apple addressed the flaw through improved memory management in iOS 26.6, iPadOS 26.6, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, and watchOS 26.6. The vulnerability spans Apple's entire product ecosystem, exposing iPhones, iPads, Macs, Apple TVs, Vision Pro headsets, and Apple Watches until patched.
Critical Impact
An application running on an unpatched Apple device can corrupt kernel memory, enabling system compromise and potential full device takeover.
Affected Products
- Apple iOS and iPadOS versions prior to 26.6
- Apple macOS Tahoe prior to 26.6, tvOS prior to 26.6
- Apple visionOS prior to 26.6 and watchOS prior to 26.6
Discovery Timeline
- 2026-07-27 - CVE-2026-64751 published to NVD
- 2026-07-28 - Last updated in NVD database
Technical Details for CVE-2026-64751
Vulnerability Analysis
The vulnerability is a use-after-free condition [CWE-416] in a kernel-accessible component shared across Apple's operating systems. Use-after-free flaws occur when a program continues to reference memory after it has been freed, allowing an attacker to manipulate the reused allocation. In this case, Apple's advisory states the flaw enables an app to cause unexpected system termination or write kernel memory. Writing kernel memory from user context typically enables kernel-mode code execution and full device compromise.
Apple confirmed the fix involves improved memory management, indicating tighter object lifecycle handling or reference counting corrections in the affected subsystem. The advisory does not name the specific kernel component, but the presence of the fix across iOS, iPadOS, macOS, tvOS, visionOS, and watchOS points to shared XNU or driver code.
Root Cause
The root cause is improper handling of object lifetimes within a kernel-accessible allocation. When an object is freed but a dangling pointer remains, subsequent operations dereference stale memory. An attacker who controls allocation patterns can reclaim the freed slot with attacker-controlled data, converting the dangling reference into a kernel write primitive.
Attack Vector
Exploitation requires an attacker to run a malicious application on the target device. The application interacts with the vulnerable kernel interface, triggers the free, and then reuses the dangling reference to corrupt kernel memory. Chained with a sandbox escape or delivered through a signed application, the flaw provides a path from user code to kernel compromise. See the Apple Security Update Advisory for platform-specific details.
No public proof-of-concept or in-the-wild exploitation is currently associated with this CVE, and it is not listed in the CISA Known Exploited Vulnerabilities catalog.
Detection Methods for CVE-2026-64751
Indicators of Compromise
- Unexpected kernel panics or repeated system terminations on Apple devices running builds earlier than 26.6
- Applications generating crash reports referencing kernel memory faults or freed object dereferences
- Unsigned or sideloaded applications exhibiting anomalous system-call patterns preceding device reboots
Detection Strategies
- Inventory Apple endpoints and flag devices reporting OS builds earlier than iOS/iPadOS/macOS/tvOS/visionOS/watchOS 26.6
- Ingest MDM compliance telemetry into a centralized data lake to correlate OS version drift with crash telemetry
- Review application install logs for unsigned or newly deployed third-party apps that could serve as exploitation vectors
Monitoring Recommendations
- Continuously monitor Apple software update posture across managed devices via MDM policies
- Alert on repeated kernel panic reports from the same device or application bundle identifier
- Track new advisories at Apple's HT support pages linked from the Apple Security Update Advisory for related patch cycles
How to Mitigate CVE-2026-64751
Immediate Actions Required
- Apply the 26.6 updates on iOS, iPadOS, macOS Tahoe, tvOS, visionOS, and watchOS as soon as they are available in your management channel
- Enforce update compliance through MDM by requiring the patched build before granting corporate resource access
- Restrict installation of untrusted or sideloaded applications until affected devices are updated
Patch Information
Apple released fixes across all affected platforms in the 26.6 update cycle. Refer to Apple's advisories at HT128066, HT128067, HT128068, HT128069, and HT128070 for the specific build numbers per platform.
Workarounds
- No vendor-provided workaround exists; patching is the only complete remediation
- Reduce attack surface by limiting app installations to the App Store and vetted enterprise sources
- Enable Lockdown Mode on high-risk user devices to constrain application capabilities until updates are applied
# Verify current OS build on macOS to confirm patch status
sw_vers
# On iOS/iPadOS devices, confirm build via MDM query or Settings > General > About
# Target build: 26.6 or later across all Apple platforms
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
