What’s Vulnerable › Vulnerabilities

CVE-2018-4189

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-01-11 · updated 2026-06-17
• Weakness: CWE-119

Description

In iOS before 11.2.5, macOS High Sierra before 10.13.3, Security Update 2018-001 Sierra, and Security Update 2018-001 El Capitan, watchOS before 4.2.2, and tvOS before 11.2.5, a memory corruption issue exists and was addressed with improved memory handling.

Affected products

• Apple TV: before 11.2.5 — fixed in 11.2.5
• Apple Iphone Os: before 11.2.5 — fixed in 11.2.5
• macOS: from 10.13.0 before 10.13.3 — fixed in 10.13.3
• Apple watchOS: before 4.2.2 — fixed in 4.2.2

How to fix

Upgrade to a fixed version: Apple TV 11.2.5; Apple Iphone Os 11.2.5; macOS 10.13.3; Apple watchOS 4.2.2. Check the vendor advisory for mitigations.

References

• https://support.apple.com/HT208462
• https://support.apple.com/HT208463
• https://support.apple.com/HT208464
• https://support.apple.com/HT208465
• https://support.apple.com/HT208462
• https://support.apple.com/HT208463
• https://support.apple.com/HT208464
• https://support.apple.com/HT208465

Get alerted when CVE-2018-4189 or the next vulnerability affects your stack