What’s Vulnerable › Vulnerabilities

CVE-2019-8809

• Severity: low (CVSS 3.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-10-27 · updated 2026-06-17

Description

A validation issue was addressed with improved logic. This issue is fixed in macOS Catalina 10.15, iOS 13.1 and iPadOS 13.1, tvOS 13, watchOS 6, iOS 13. A local app may be able to read a persistent account identifier.

Affected products

• Apple iPadOS: before 13.1 — fixed in 13.1
• Apple Iphone Os: before 13.1 — fixed in 13.1
• macOS: before 10.15 — fixed in 10.15
• Apple tvOS: before 13.0 — fixed in 13.0
• Apple watchOS: before 6.0 — fixed in 6.0

How to fix

Upgrade to a fixed version: Apple iPadOS 13.1; Apple Iphone Os 13.1; macOS 10.15; Apple tvOS 13.0; Apple watchOS 6.0. Check the vendor advisory for mitigations.

References

• https://support.apple.com/en-us/HT210603
• https://support.apple.com/en-us/HT210604
• https://support.apple.com/en-us/HT210606
• https://support.apple.com/en-us/HT210607
• https://support.apple.com/en-us/HT210634
• https://support.apple.com/en-us/HT210603
• https://support.apple.com/en-us/HT210604
• https://support.apple.com/en-us/HT210606
• https://support.apple.com/en-us/HT210607
• https://support.apple.com/en-us/HT210634

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