The vulnerability is a use‑after‑free flaw in Apple operating systems that can lead to unexpected system termination when certain operating system components free memory incorrectly before it is no longer in use. A malicious application that triggers this flaw may crash the operating system, resulting in a denial of service scenario where legitimate user‑level processes or the system itself stop functioning until rebooted. The weakness is identified as a use‑after‑free condition (CWE‑416) and indicates that stable memory access is not properly protected after deallocation.

Apple products affected by the flaw include iOS, iPadOS, macOS (Sequoia 15.7.8 and Tahoe 26.6), tvOS, and visionOS. The advisory lists fixes in iOS 26.6, iPadOS 26.6, macOS Sequoia 15.7.8, macOS Tahoe 26.6, tvOS 26.6, and visionOS 26.6, so any version prior to those is considered vulnerable.

The EPSS score is < 1 %, indicating a very low exploitation probability, and the vulnerability is not listed in the CISA KEV catalog, so no public exploitation is known at this time. The likely attack vector requires a malicious application or script that can access free memory on the target device; local installation is inferred as a prerequisite. Because a patch has been released, the practical risk is mitigated for devices that apply the update, and the exposure may be considered low if the device is kept up to date.