What’s Vulnerable › Vulnerabilities

CVE-2018-4263

• Severity: high (CVSS 8.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.0% 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

Multiple memory corruption issues were addressed with improved memory handling. This issue affected versions prior to iOS 11.4.1, tvOS 11.4.1, Safari 11.1.2, iTunes 12.8 for Windows, iCloud for Windows 7.6.

Affected products

• Apple iCloud for Windows: before 7.6 — fixed in 7.6
• Apple Iphone Os: before 11.4.1 — fixed in 11.4.1
• Apple iTunes for Windows: before 12.8 — fixed in 12.8
• Apple Safari: before 11.1.2 — fixed in 11.1.2
• Apple tvOS: before 11.4.1 — fixed in 11.4.1

How to fix

Upgrade to a fixed version: Apple iCloud for Windows 7.6; Apple Iphone Os 11.4.1; Apple iTunes for Windows 12.8; Apple Safari 11.1.2; Apple tvOS 11.4.1. Check the vendor advisory for mitigations.

References

• https://support.apple.com/kb/HT208932
• https://support.apple.com/kb/HT208933
• https://support.apple.com/kb/HT208934
• https://support.apple.com/kb/HT208936
• https://support.apple.com/kb/HT208938
• https://support.apple.com/kb/HT208932
• https://support.apple.com/kb/HT208933
• https://support.apple.com/kb/HT208934
• https://support.apple.com/kb/HT208936
• https://support.apple.com/kb/HT208938

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