Executive brief
A memory management vulnerability in Apple operating systems could allow a malicious application to cause a sudden system crash or termination. This affects iPhones, iPads, Macs, Apple TVs, and Apple Watches. While primarily a stability risk, such flaws can sometimes be used to disrupt device operations.
Technical details
A use-after-free vulnerability exists in multiple Apple operating systems due to improper memory management. A local application can exploit this flaw to trigger an unexpected system termination (denial of service). The issue was addressed by improving memory management logic. Affected platforms include iOS/iPadOS, macOS Tahoe, tvOS, and watchOS, all prior to version 26.6.
Affected products
- Apple iOS and iPadOS < 26.6
- Apple macOS < 26.6 (Tahoe)
- Apple tvOS < 26.6
- Apple watchOS < 26.6
Timeline
- 2026-07-27: disclosed
- 2026-07-27: patched