What’s Vulnerable › Vulnerabilities

CVE-2018-4451

• Severity: high (CVSS 7.8 v3.1)
• 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: 2020-10-27 · updated 2026-06-17

Description

This issue is fixed in macOS Mojave 10.14. A memory corruption issue was addressed with improved input validation.

Affected products

• macOS: before 10.14 — fixed in 10.14

How to fix

Upgrade to a fixed version: macOS 10.14. Check the vendor advisory for mitigations.

References

• https://support.apple.com/en-us/HT209139
• https://support.apple.com/en-us/HT209139

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