Apple · Watchos · CVE-2018-4240
**Name of the Vulnerable Software and Affected Versions**
iOS versions prior to 11.4
macOS versions prior to 10.13.5
tvOS versions prior to 11.4
watchOS versions prior to 4.3.1
**Description**
The issue involves the `Messages` component and allows remote attackers to cause a denial of service via a crafted message.
**Recommendations**
For iOS versions prior to 11.4, update to version 11.4 or later.
For macOS versions prior to 10.13.5, update to version 10.13.5 or later.
For tvOS versions prior to 11.4, update to version 11.4 or later.
For watchOS versions prior to 4.3.1, update to version 4.3.1 or later.