CVE-2018-4239

Severity: medium (CVSS 4.6 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-06-08 · updated 2026-06-17
Weakness: CWE-200

Description

An issue was discovered in certain Apple products. iOS before 11.4 is affected. The issue involves the "Magnifier" component. It allows physically proximate attackers to bypass the lock-screen protection mechanism and see the most recent Magnifier image.

Affected products

Apple Iphone Os: before 11.4 — fixed in 11.4

How to fix

Upgrade to a fixed version: Apple Iphone Os 11.4. Check the vendor advisory for mitigations.

References

http://www.securitytracker.com/id/1041031
https://support.apple.com/HT208848
http://www.securitytracker.com/id/1041031
https://support.apple.com/HT208848

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