Apple · Ios · CVE-2018-4140
**Name of the Vulnerable Software and Affected Versions**
iOS versions prior to 11.3
**Description**
The issue involves the `Telephony` component and allows remote attackers to cause a denial of service via a Class 0 SMS message, resulting in a NULL pointer dereference and reboot.
**Recommendations**
For iOS versions prior to 11.3, update to version 11.3 or later to resolve the issue.