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CVE-2018-4431

MediumPublished

A memory initialization issue was addressed with improved memory handling. This issue affected versions prior to iOS 12.1.1, macOS Mojave 10.14.2, tvOS...

Published: Apr 3, 2019
Updated: Aug 5, 2024
Assigning CNA: apple
Evidence observed: Aug 8, 2026

Primary CVSS

5.5/ 10Medium

nvd · CVSS 3.0

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS probability estimate

0.7%

Low · next 30 days

Percentile: 52.9%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

A memory initialization issue was addressed with improved memory handling. This issue affected versions prior to iOS 12.1.1, macOS Mojave 10.14.2, tvOS 12.1.1, watchOS 5.1.2.

Sources

PoC_iOS12PoC
PoC Exploit iOS 12 to iOS 12.1 (CVE-2018-4431)

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