What’s Vulnerable › Vulnerabilities

CVE-2018-4423

• Severity: high (CVSS 7.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-04-03 · updated 2026-06-17
• Weakness: CWE-20

Description

A logic issue was addressed with improved validation. This issue affected versions prior to macOS Mojave 10.14.1.

Affected products

• macOS: before 10.14.1 — fixed in 10.14.1

How to fix

Upgrade to a fixed version: macOS 10.14.1. Check the vendor advisory for mitigations.

References

• https://support.apple.com/kb/HT209193
• https://support.apple.com/kb/HT209193

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