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Vulnerability record · CVE-2019-8662 · published 18 December 2019

CVE-2019-8662: Apple iphone os use after free vulnerability

Apple · Iphone Os

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.

9.8 CVSS 3.1 Critical EPSS 9.8% · top 4.6% CWE-416 · Use after freeCWE-502 · Deserialization of untrusted data
9.8CVSS 3.1 base score, v2 7.5
9.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

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.

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

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://support.apple.com/HT210346 Vendor Advisory
https://support.apple.com/HT210348 Vendor Advisory
https://support.apple.com/HT210351 Vendor Advisory
https://support.apple.com/HT210353 Vendor Advisory
https://support.apple.com/HT210346 Vendor Advisory
https://support.apple.com/HT210348 Vendor Advisory
https://support.apple.com/HT210351 Vendor Advisory
https://support.apple.com/HT210353 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2019-8662), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.