CVE-2019-8593

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-12-18 · updated 2026-06-17
Weakness: CWE-787

Description

A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 12.3, tvOS 12.3, watchOS 5.2.1. An application may be able to execute arbitrary code with system privileges.

Affected products

Apple Iphone Os: before 12.3 — fixed in 12.3
Apple tvOS: before 12.3 — fixed in 12.3
Apple watchOS: before 5.2.1 — fixed in 5.2.1

How to fix

Upgrade to a fixed version: Apple Iphone Os 12.3; Apple tvOS 12.3; Apple watchOS 5.2.1. Check the vendor advisory for mitigations.

References

https://support.apple.com/HT210118
https://support.apple.com/HT210120
https://support.apple.com/HT210122
https://support.apple.com/HT210118
https://support.apple.com/HT210120
https://support.apple.com/HT210122

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