Executive brief
A memory management vulnerability has been identified in Apple's operating systems, including iOS, macOS, tvOS, and watchOS. A malicious application installed on a device could exploit this flaw to cause the system to crash or terminate unexpectedly. This could lead to a loss of unsaved data or temporary disruption of service for the user.
Technical details
A use-after-free (UAF) vulnerability exists in multiple Apple operating systems due to improper memory management. A local attacker, via a malicious application, can trigger this condition to cause unexpected system termination (denial of service). The vulnerability affects iOS, iPadOS, macOS Tahoe, tvOS, and watchOS. Apple has addressed the root cause by improving memory management logic in the affected components. Patches are available in versions 26.6 of the respective operating systems.
Affected products
- Apple iOS and iPadOS Before 26.6
- Apple macOS Tahoe Before 26.6
- Apple tvOS Before 26.6
- Apple watchOS Before 26.6
Timeline
- 2026-07-27: advisory
- 2026-07-27: patched