What’s Vulnerable › Vulnerabilities

CVE-2018-4456

• Severity: high (CVSS 7.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% 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-119

Description

A memory corruption issue was addressed with improved input validation. This issue affected versions prior to macOS High Sierra 10.13.6, macOS Mojave 10.14.

Affected products

• macOS: before 10.13.6 — fixed in 10.13.6

How to fix

Upgrade to a fixed version: macOS 10.13.6. Check the vendor advisory for mitigations.

References

• http://seclists.org/fulldisclosure/2019/May/20
• https://seclists.org/bugtraq/2019/May/27
• https://support.apple.com/kb/HT208937
• https://support.apple.com/kb/HT209139
• https://support.apple.com/kb/HT209341
• https://support.apple.com/kb/HT210119
• http://seclists.org/fulldisclosure/2019/May/20
• https://seclists.org/bugtraq/2019/May/27
• https://support.apple.com/kb/HT208937
• https://support.apple.com/kb/HT209139
• https://support.apple.com/kb/HT209341
• https://support.apple.com/kb/HT210119

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