CVE-2018-4137: Apple iPhone OS

High severity, CVSS 7.5. EPSS: 2.3% chance of exploitation in the next 30 days.

An issue was discovered in certain Apple products. iOS before 11.3 is affected. Safari before 11.1 is affected. The issue involves the "Safari Login AutoFill" component. It allows remote attackers to read autofilled data by leveraging lack of a user-confirmation requirement.

Affected products

• Apple iPhone OS: before 11.3 (fixed in 11.3)
• Apple Safari: before 11.1 (fixed in 11.1)

Published 2018-04-03. Last modified 2026-06-17.