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CVE-2019-8662

CriticalPublished

This issue was addressed with improved checks. This issue is fixed in iOS 12.4, macOS Mojave 10.14.6, tvOS 12.4, watchOS 5.3. An attacker may be able to...

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

9.8%

Low · next 30 days

Percentile: 95.4%
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

This issue was addressed with improved checks. This issue is fixed in iOS 12.4, macOS Mojave 10.14.6, tvOS 12.4, watchOS 5.3. An attacker may be able to trigger a use-after-free in an application deserializing an untrusted NSDictionary.

Sources

macOS / iOS NSKeyedUnarchiver - Use-After-Free of ObjC Objects when Unarchiving OITSUIntDictionary InstancesExploit
Google Security Research · multiple · Jul 30, 2019
iMessage - Decoding NSSharedKeyDictionary can read ObjC Object at Attacker Controlled AddressExploit
Google Security Research · multiple · Nov 11, 2019

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