CVE-2019-8526: Apple macOS Use-After-Free Vulnerability

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: yes — in CISA KEV since 2023-04-17
EPSS: 0.7% 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-416

Description

A use after free issue was addressed with improved memory management. This issue is fixed in macOS Mojave 10.14.4. An application may be able to gain elevated privileges.

Affected products

macOS: before 10.14.4 — fixed in 10.14.4

How to fix

Upgrade to a fixed version: macOS 10.14.4. Check the vendor advisory for mitigations.

References

https://support.apple.com/HT209600
https://support.apple.com/HT209600
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-8526

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