What’s Vulnerable › Vulnerabilities

CVE-2020-3894

• Severity: low (CVSS 3.1 v3.1)
• 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: 2020-04-01 · updated 2026-06-17
• Weakness: CWE-362

Description

A race condition was addressed with additional validation. This issue is fixed in iOS 13.4 and iPadOS 13.4, tvOS 13.4, Safari 13.1, iTunes for Windows 12.10.5, iCloud for Windows 10.9.3, iCloud for Windows 7.18. An application may be able to read restricted memory.

Affected products

• Apple iCloud for Windows: before 10.9.3 — fixed in 10.9.3
• Apple Ipad Os: before 13.4 — fixed in 13.4
• Apple Iphone Os: before 13.4 — fixed in 13.4
• Apple iTunes for Windows: before 12.10.5 — fixed in 12.10.5
• Apple Safari: before 13.1 — fixed in 13.1
• Apple tvOS: before 13.4 — fixed in 13.4

How to fix

Upgrade to a fixed version: Apple iCloud for Windows 10.9.3; Apple Ipad Os 13.4; Apple Iphone Os 13.4; Apple iTunes for Windows 12.10.5; Apple Safari 13.1; Apple tvOS 13.4. Check the vendor advisory for mitigations.

References

• https://support.apple.com/HT211101
• https://support.apple.com/HT211102
• https://support.apple.com/HT211104
• https://support.apple.com/HT211105
• https://support.apple.com/HT211106
• https://support.apple.com/HT211107
• https://support.apple.com/HT211101
• https://support.apple.com/HT211102
• https://support.apple.com/HT211104
• https://support.apple.com/HT211105
• https://support.apple.com/HT211106
• https://support.apple.com/HT211107

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