CVE-2018-4137

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-04-03 · updated 2026-06-17
Weakness: CWE-200

Description

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

How to fix

Upgrade to a fixed version: Apple Iphone Os 11.3; Apple Safari 11.1. Check the vendor advisory for mitigations.

References

http://www.securitytracker.com/id/1040604
https://support.apple.com/HT208693
https://support.apple.com/HT208695
http://www.securitytracker.com/id/1040604
https://support.apple.com/HT208693
https://support.apple.com/HT208695

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