CVE-2018-4131

Severity: high (CVSS 7.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-04-03 · updated 2026-06-17

Description

An issue was discovered in certain Apple products. iOS before 11.3 is affected. macOS before 10.13.4 is affected. The issue involves the "WindowServer" component. It allows attackers to bypass the Secure Input Mode protection mechanism, and log keystrokes of arbitrary apps, via a crafted app that scans key states.

Affected products

Apple Iphone Os: before 11.3 — fixed in 11.3
macOS: before 10.13.4 — fixed in 10.13.4

How to fix

Upgrade to a fixed version: Apple Iphone Os 11.3; macOS 10.13.4. Check the vendor advisory for mitigations.

References

http://www.securityfocus.com/bid/103581
http://www.securitytracker.com/id/1040604
http://www.securitytracker.com/id/1040608
https://support.apple.com/HT208692
https://support.apple.com/HT208693
https://twitter.com/boastr_net/status/979624397664333824
http://www.securityfocus.com/bid/103581
http://www.securitytracker.com/id/1040604
http://www.securitytracker.com/id/1040608
https://support.apple.com/HT208692
https://support.apple.com/HT208693
https://twitter.com/boastr_net/status/979624397664333824

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