What’s Vulnerable › Vulnerabilities

CVE-2019-8503

• Severity: high (CVSS 8.8 v3.1)
• 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: 2019-12-18 · updated 2026-06-17
• Weakness: CWE-20

Description

A logic issue was addressed with improved validation. This issue is fixed in iOS 12.2, tvOS 12.2, Safari 12.1, iTunes 12.9.4 for Windows, iCloud for Windows 7.11. A malicious website may be able to execute scripts in the context of another website.

Affected products

• Apple iCloud for Windows: before 7.11 — fixed in 7.11
• Apple Iphone Os: before 12.2 — fixed in 12.2
• Apple iTunes for Windows: before 12.9.4 — fixed in 12.9.4
• Apple Safari: before 12.1 — fixed in 12.1
• Apple tvOS: before 12.2 — fixed in 12.2

How to fix

Upgrade to a fixed version: Apple iCloud for Windows 7.11; Apple Iphone Os 12.2; Apple iTunes for Windows 12.9.4; Apple Safari 12.1; Apple tvOS 12.2. Check the vendor advisory for mitigations.

References

• https://support.apple.com/HT209599
• https://support.apple.com/HT209601
• https://support.apple.com/HT209603
• https://support.apple.com/HT209604
• https://support.apple.com/HT209605
• https://support.apple.com/HT209599
• https://support.apple.com/HT209601
• https://support.apple.com/HT209603
• https://support.apple.com/HT209604
• https://support.apple.com/HT209605

Get alerted when CVE-2019-8503 or the next vulnerability affects your stack