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CVE-2019-8647

CriticalPublished

A use after free issue was addressed with improved memory management. This issue is fixed in iOS 12.4, tvOS 12.4, watchOS 5.3. A remote attacker may be able...

Published: Dec 18, 2019
Updated: Aug 4, 2024
Assigning CNA: apple
Evidence observed: Jul 30, 2019

Primary CVSS

9.8/ 10Critical

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS probability estimate

13.5%

Moderate · next 30 days

Percentile: 96.3%
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 use after free issue was addressed with improved memory management. This issue is fixed in iOS 12.4, tvOS 12.4, watchOS 5.3. A remote attacker may be able to cause arbitrary code execution.

Sources

iMessage - NSArray Deserialization can Invoke Subclass that does not Retain ReferencesExploit
Google Security Research · multiple · Jul 30, 2019

Responsible use

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