Executive brief
A vulnerability in Apple's operating systems, including iOS, macOS, and watchOS, could allow a remote attacker to crash the system. This issue affects a wide range of devices such as iPhones, iPads, Macs, and Apple Watches. An exploit could lead to unexpected system shutdowns, potentially disrupting operations or causing data loss during active use.
Technical details
An out-of-bounds write vulnerability exists across multiple Apple operating systems due to insufficient bounds checking. A remote attacker can exploit this flaw to trigger a system crash or unexpected termination. The issue was addressed by improving the validation of memory boundaries. Affected platforms include iOS, iPadOS, macOS (Sonoma, Sequoia, and Tahoe), tvOS, visionOS, and watchOS. Patches are available in the latest software updates (e.g., iOS 26.6, macOS Sequoia 15.7.8).
Affected products
- Apple iOS and iPadOS < 26.6
- Apple macOS Sequoia < 15.7.8
- Apple macOS Sonoma < 14.8.8
- Apple macOS Tahoe < 26.6
- Apple tvOS < 26.6
- Apple visionOS < 26.6
- Apple watchOS < 26.6
Timeline
- 2026-07-27: disclosed
- 2026-07-27: patched